diff --git a/src/libslic3r/PresetBundle.cpp b/src/libslic3r/PresetBundle.cpp
index ee5feb66d8..c4f58e3271 100644
--- a/src/libslic3r/PresetBundle.cpp
+++ b/src/libslic3r/PresetBundle.cpp
@@ -351,6 +351,20 @@ bool PresetBundle::use_bbl_network()
     return use_bbl_network;
 }
 
+bool PresetBundle::use_bbl_device_tab() {
+    if (!is_bbl_vendor()) {
+        return false;
+    }
+
+    if (use_bbl_network()) {
+        return true;
+    }
+
+    const auto cfg = printers.get_edited_preset().config;
+    // Use bbl device tab if printhost webui url is not set 
+    return cfg.opt_string("print_host_webui").empty();
+}
+
 //BBS: load project embedded presets
 PresetsConfigSubstitutions PresetBundle::load_project_embedded_presets(std::vector<Preset*> project_presets, ForwardCompatibilitySubstitutionRule substitution_rule)
 {
diff --git a/src/libslic3r/PresetBundle.hpp b/src/libslic3r/PresetBundle.hpp
index f88c39c210..976e654074 100644
--- a/src/libslic3r/PresetBundle.hpp
+++ b/src/libslic3r/PresetBundle.hpp
@@ -92,7 +92,10 @@ class PresetBundle
     VendorType get_current_vendor_type();
     // Vendor related handy functions
     bool is_bbl_vendor() { return get_current_vendor_type() == VendorType::Marlin_BBL; }
+    // Whether using bbl network for print upload
     bool use_bbl_network();
+    // Whether using bbl's device tab
+    bool use_bbl_device_tab();
 
     //BBS: project embedded preset logic
     PresetsConfigSubstitutions load_project_embedded_presets(std::vector<Preset*> project_presets, ForwardCompatibilitySubstitutionRule substitution_rule);
diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index 7af8f5c7b9..8669592f82 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -549,7 +549,6 @@ void PrintConfigDef::init_common_params()
     def->cli = ConfigOptionDef::nocli;
     def->set_default_value(new ConfigOptionString(""));
 
-
     def = this->add("printhost_apikey", coString);
     def->label = L("API Key / Password");
     def->tooltip = L("Orca Slicer can upload G-code files to a printer host. This field should contain "
diff --git a/src/slic3r/GUI/BackgroundSlicingProcess.cpp b/src/slic3r/GUI/BackgroundSlicingProcess.cpp
index 0e98e85ea6..ca8c7a1663 100644
--- a/src/slic3r/GUI/BackgroundSlicingProcess.cpp
+++ b/src/slic3r/GUI/BackgroundSlicingProcess.cpp
@@ -901,23 +901,27 @@ void BackgroundSlicingProcess::prepare_upload()
 		/ boost::filesystem::unique_path("." SLIC3R_APP_KEY ".upload.%%%%-%%%%-%%%%-%%%%");
 
 	if (m_print == m_fff_print) {
-		m_print->set_status(95, _utf8(L("Running post-processing scripts")));
-		std::string error_message;
-		if (copy_file(m_temp_output_path, source_path.string(), error_message) != SUCCESS)
-			throw Slic3r::RuntimeError(_utf8(L("Copying of the temporary G-code to the output G-code failed")));
-        m_upload_job.upload_data.upload_path = m_fff_print->print_statistics().finalize_output_path(m_upload_job.upload_data.upload_path.string());
-		// Orca: skip post-processing scripts for BBL printers as we have run them already in finalize_gcode()
-		// todo: do we need to copy the file?
+        if (m_upload_job.upload_data.use_3mf) {
+            source_path = m_upload_job.upload_data.source_path;
+        } else {
+		    m_print->set_status(95, _utf8(L("Running post-processing scripts")));
+		    std::string error_message;
+		    if (copy_file(m_temp_output_path, source_path.string(), error_message) != SUCCESS)
+		    	throw Slic3r::RuntimeError(_utf8(L("Copying of the temporary G-code to the output G-code failed")));
+            m_upload_job.upload_data.upload_path = m_fff_print->print_statistics().finalize_output_path(m_upload_job.upload_data.upload_path.string());
+		    // Orca: skip post-processing scripts for BBL printers as we have run them already in finalize_gcode()
+		    // todo: do we need to copy the file?
 		
-        // Make a copy of the source path, as run_post_process_scripts() is allowed to change it when making a copy of the source file
-        // (not here, but when the final target is a file).
-        if (!m_fff_print->is_BBL_printer()) {
-            std::string source_path_str = source_path.string();
-            std::string output_name_str = m_upload_job.upload_data.upload_path.string();
-            if (run_post_process_scripts(source_path_str, false, m_upload_job.printhost->get_name(), output_name_str,
-                                         m_fff_print->full_print_config()))
-                m_upload_job.upload_data.upload_path = output_name_str;
-        }
+            // Make a copy of the source path, as run_post_process_scripts() is allowed to change it when making a copy of the source file
+            // (not here, but when the final target is a file). 
+            if (!m_fff_print->is_BBL_printer()) {
+                std::string source_path_str = source_path.string();
+                std::string output_name_str = m_upload_job.upload_data.upload_path.string();
+                if (run_post_process_scripts(source_path_str, false, m_upload_job.printhost->get_name(), output_name_str,
+                                             m_fff_print->full_print_config()))
+			    m_upload_job.upload_data.upload_path = output_name_str;
+			}
+		}
     } else {
         m_upload_job.upload_data.upload_path = m_sla_print->print_statistics().finalize_output_path(m_upload_job.upload_data.upload_path.string());
         
diff --git a/src/slic3r/GUI/MainFrame.cpp b/src/slic3r/GUI/MainFrame.cpp
index 414a4b2d5e..0689c5a7d3 100644
--- a/src/slic3r/GUI/MainFrame.cpp
+++ b/src/slic3r/GUI/MainFrame.cpp
@@ -1615,7 +1615,7 @@ wxBoxSizer* MainFrame::create_side_tools()
             SidePopup* p = new SidePopup(this);
 
             if (wxGetApp().preset_bundle
-                && !wxGetApp().preset_bundle->use_bbl_network()) {
+                && !wxGetApp().preset_bundle->is_bbl_vendor()) {
                 // ThirdParty Buttons
                 SideButton* export_gcode_btn = new SideButton(p, _L("Export G-code file"), "");
                 export_gcode_btn->SetCornerRadius(0);
@@ -1715,10 +1715,32 @@ wxBoxSizer* MainFrame::create_side_tools()
                     p->Dismiss();
                     });
 
+                bool support_send = true;
+                bool support_print_all = true;
+
+                const auto preset_bundle = wxGetApp().preset_bundle;
+                if (preset_bundle) {
+                    if (preset_bundle->use_bbl_network()) {
+                        // BBL network support everything
+                    } else {
+                        support_send = false; // All 3rd print hosts do not have the send options
+
+                        auto cfg = preset_bundle->printers.get_edited_preset().config;
+                        const auto host_type = cfg.option<ConfigOptionEnum<PrintHostType>>("host_type")->value;
+
+                        // Only simply print support uploading all plates
+                        support_print_all = host_type == PrintHostType::htSimplyPrint;
+                    }
+                }
+
                 p->append_button(print_plate_btn);
-                p->append_button(print_all_btn);
-                p->append_button(send_to_printer_btn);
-                p->append_button(send_to_printer_all_btn);
+                if (support_print_all) {
+                    p->append_button(print_all_btn);
+                }
+                if (support_send) {
+                    p->append_button(send_to_printer_btn);
+                    p->append_button(send_to_printer_all_btn);
+                }
                 if (enable_multi_machine) {
                     SideButton* print_multi_machine_btn = new SideButton(p, _L("Send to Multi-device"), "");
                     print_multi_machine_btn->SetCornerRadius(0);
@@ -3636,14 +3658,14 @@ void MainFrame::load_printer_url(wxString url, wxString apikey)
 void MainFrame::load_printer_url()
 {
     PresetBundle &preset_bundle = *wxGetApp().preset_bundle;
-    if (preset_bundle.use_bbl_network())
+    if (preset_bundle.use_bbl_device_tab())
         return;
 
     auto     cfg = preset_bundle.printers.get_edited_preset().config;
     wxString url = cfg.opt_string("print_host_webui").empty() ? cfg.opt_string("print_host") : cfg.opt_string("print_host_webui");
     wxString apikey;
-    if (cfg.has("printhost_apikey") && (cfg.option<ConfigOptionEnum<PrintHostType>>("host_type")->value == htPrusaLink ||
-                                        cfg.option<ConfigOptionEnum<PrintHostType>>("host_type")->value == htPrusaConnect))
+    const auto host_type = cfg.option<ConfigOptionEnum<PrintHostType>>("host_type")->value;
+    if (cfg.has("printhost_apikey") && (host_type == htPrusaLink || host_type == htPrusaConnect))
         apikey = cfg.opt_string("printhost_apikey");
     if (!url.empty()) {
         if (!url.Lower().starts_with("http"))
diff --git a/src/slic3r/GUI/PhysicalPrinterDialog.cpp b/src/slic3r/GUI/PhysicalPrinterDialog.cpp
index 621248cb11..1ec7b537e3 100644
--- a/src/slic3r/GUI/PhysicalPrinterDialog.cpp
+++ b/src/slic3r/GUI/PhysicalPrinterDialog.cpp
@@ -130,6 +130,8 @@ void PhysicalPrinterDialog::build_printhost_settings(ConfigOptionsGroup* m_optgr
             this->update_printhost_buttons();
         if (opt_key == "printhost_port")
             this->update_ports();
+        if (opt_key == "bbl_use_print_host_webui")
+            this->update_webui();
     };
 
     m_optgroup->append_single_option_line("host_type");
@@ -253,6 +255,19 @@ void PhysicalPrinterDialog::build_printhost_settings(ConfigOptionsGroup* m_optgr
     option.opt.width = Field::def_width_wider();
     m_optgroup->append_single_option_line(option);
 
+    {
+        // For bbl printers, we build a fake option to control whether the original device tab should be used
+        ConfigOptionDef def;
+        def.type     = coBool;
+        def.width    = Field::def_width();
+        def.label    = L("View print host webui in Device tab");
+        def.tooltip  = L("Replace the BambuLab's device tab with print host webui");
+        def.set_default_value(new ConfigOptionBool(false));
+
+        auto option = Option(def, "bbl_use_print_host_webui");
+        m_optgroup->append_single_option_line(option);
+    }
+
     m_optgroup->append_single_option_line("printhost_authorization_type");
 
     option = m_optgroup->get_option("printhost_apikey");
@@ -402,6 +417,30 @@ void PhysicalPrinterDialog::update_ports() {
     }
 }
 
+void PhysicalPrinterDialog::update_webui()
+{
+    const PrinterTechnology tech = Preset::printer_technology(*m_config);
+    if (tech == ptFFF) {
+        const auto opt = m_config->option<ConfigOptionEnum<PrintHostType>>("host_type");
+        if (opt->value == htSimplyPrint) {
+            bool bbl_use_print_host_webui = false;
+            if (Field* printhost_webui_field = m_optgroup->get_field("bbl_use_print_host_webui"); printhost_webui_field) {
+                if (CheckBox* temp = dynamic_cast<CheckBox*>(printhost_webui_field); temp) {
+                    bbl_use_print_host_webui = boost::any_cast<bool>(temp->get_value());
+                }
+            }
+
+            const std::string v = bbl_use_print_host_webui ? "https://simplyprint.io/panel" : "";
+            if (Field* printhost_webui_field = m_optgroup->get_field("print_host_webui"); printhost_webui_field) {
+                if (wxTextCtrl* temp = dynamic_cast<TextCtrl*>(printhost_webui_field)->text_ctrl(); temp) {
+                    temp->SetValue(v);
+                }
+            }
+            m_config->opt_string("print_host_webui") = v;
+        }
+    }
+}
+
 void PhysicalPrinterDialog::update_printhost_buttons()
 {
     std::unique_ptr<PrintHost> host(PrintHost::get_print_host(m_config));
@@ -504,7 +543,8 @@ void PhysicalPrinterDialog::update(bool printer_change)
         m_optgroup->show_field("host_type");
 
         m_optgroup->enable_field("print_host");
-        m_optgroup->enable_field("print_host_webui");
+        m_optgroup->show_field("print_host_webui");
+        m_optgroup->hide_field("bbl_use_print_host_webui");
         m_optgroup->enable_field("printhost_cafile");
         m_optgroup->enable_field("printhost_ssl_ignore_revoke");
         if (m_printhost_cafile_browse_btn)
@@ -516,21 +556,12 @@ void PhysicalPrinterDialog::update(bool printer_change)
                 const auto current_host = temp->GetValue();
                 if (current_host == L"https://connect.prusa3d.com" ||
                     current_host == L"https://app.obico.io" ||
-                    current_host == "https://simplyprint.io") {
+                    current_host == "https://simplyprint.io" || current_host == "https://simplyprint.io/panel") {
                     temp->SetValue(wxString());
                     m_config->opt_string("print_host") = "";
                 }
             }
         }
-        if (Field* printhost_webui_field = m_optgroup->get_field("print_host_webui"); printhost_webui_field) {
-            if (wxTextCtrl* temp = dynamic_cast<TextCtrl*>(printhost_webui_field)->text_ctrl(); temp) {
-                const auto current_host = temp->GetValue();
-                if (current_host == "https://simplyprint.io/panel") {
-                    temp->SetValue(wxString());
-                    m_config->opt_string("print_host_webui") = "";
-                }
-            }
-        }
         if (opt->value == htPrusaLink) { // PrusaConnect does NOT allow http digest
             m_optgroup->show_field("printhost_authorization_type");
             AuthorizationType auth_type = m_config->option<ConfigOptionEnum<AuthorizationType>>("printhost_authorization_type")->value;
@@ -548,6 +579,7 @@ void PhysicalPrinterDialog::update(bool printer_change)
                 if (Field* printhost_field = m_optgroup->get_field("print_host"); printhost_field) {
                     if (wxTextCtrl* temp = dynamic_cast<TextCtrl*>(printhost_field)->text_ctrl(); temp && temp->GetValue().IsEmpty()) {
                         temp->SetValue(L"https://connect.prusa3d.com");
+                        m_config->opt_string("print_host") = "https://connect.prusa3d.com";
                     }
                 }
             } else if (opt->value == htObico) { // automatically show default obico address
@@ -562,17 +594,33 @@ void PhysicalPrinterDialog::update(bool printer_change)
                 if (Field* printhost_field = m_optgroup->get_field("print_host"); printhost_field) {
                     printhost_field->disable();
                     if (wxTextCtrl* temp = dynamic_cast<TextCtrl*>(printhost_field)->text_ctrl(); temp && temp->GetValue().IsEmpty()) {
-                        temp->SetValue("https://simplyprint.io");
+                        temp->SetValue("https://simplyprint.io/panel");
                     }
-                    m_config->opt_string("print_host") = "https://simplyprint.io";
+                    m_config->opt_string("print_host") = "https://simplyprint.io/panel";
                 }
-                if (Field* printhost_webui_field = m_optgroup->get_field("print_host_webui"); printhost_webui_field) {
-                    printhost_webui_field->disable();
-                    if (wxTextCtrl* temp = dynamic_cast<TextCtrl*>(printhost_webui_field)->text_ctrl(); temp && temp->GetValue().IsEmpty()) {
-                        temp->SetValue("https://simplyprint.io/panel");
+
+                const auto current_webui = m_config->opt_string("print_host_webui");
+                if (!current_webui.empty()) {
+                    if (Field* printhost_webui_field = m_optgroup->get_field("print_host_webui"); printhost_webui_field) {
+                        if (wxTextCtrl* temp = dynamic_cast<TextCtrl*>(printhost_webui_field)->text_ctrl(); temp) {
+                            temp->SetValue("https://simplyprint.io/panel");
+                        }
                     }
                     m_config->opt_string("print_host_webui") = "https://simplyprint.io/panel";
                 }
+
+                // For bbl printers, show option to control the device tab
+                if (wxGetApp().preset_bundle->is_bbl_vendor()) {
+                    m_optgroup->show_field("bbl_use_print_host_webui");
+                    const bool use_print_host_webui = !current_webui.empty();
+                    if (Field* printhost_webui_field = m_optgroup->get_field("bbl_use_print_host_webui"); printhost_webui_field) {
+                        if (CheckBox* temp = dynamic_cast<CheckBox*>(printhost_webui_field); temp) {
+                            temp->set_value(use_print_host_webui);
+                        }
+                    }
+                }
+
+                m_optgroup->hide_field("print_host_webui");
                 m_optgroup->hide_field("printhost_apikey");
                 m_optgroup->disable_field("printhost_cafile");
                 m_optgroup->disable_field("printhost_ssl_ignore_revoke");
diff --git a/src/slic3r/GUI/PhysicalPrinterDialog.hpp b/src/slic3r/GUI/PhysicalPrinterDialog.hpp
index 855370568f..b6faff82f9 100644
--- a/src/slic3r/GUI/PhysicalPrinterDialog.hpp
+++ b/src/slic3r/GUI/PhysicalPrinterDialog.hpp
@@ -63,6 +63,7 @@ class PhysicalPrinterDialog : public DPIDialog
     void        update_printhost_buttons();
     void        update_printers();
     void        update_ports();
+    void        update_webui();
 
 protected:
     void on_dpi_changed(const wxRect& suggested_rect) override;
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index f27cad243c..629ba996d1 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -1181,12 +1181,11 @@ void Sidebar::update_all_preset_comboboxes()
     const auto print_tech = preset_bundle.printers.get_edited_preset().printer_technology();
 
     bool is_bbl_vendor = preset_bundle.is_bbl_vendor();
-    const bool use_bbl_network = preset_bundle.use_bbl_network();
 
     auto p_mainframe = wxGetApp().mainframe;
     auto cfg = preset_bundle.printers.get_edited_preset().config;
 
-    if (use_bbl_network) {
+    if (preset_bundle.use_bbl_network()) {
         //only show connection button for not-BBL printer
         connection_btn->Hide();
         //only show sync-ams button for BBL printer
@@ -1204,9 +1203,10 @@ void Sidebar::update_all_preset_comboboxes()
         else {
             if (!url.Lower().starts_with("http"))
                 url = wxString::Format("http://%s", url);
-            if (cfg.has("printhost_apikey"))
+            const auto host_type = cfg.option<ConfigOptionEnum<PrintHostType>>("host_type")->value;
+            if (cfg.has("printhost_apikey") && (host_type != htSimplyPrint))
                 apikey = cfg.opt_string("printhost_apikey");
-            print_btn_type = MainFrame::PrintSelectType::eSendGcode;
+            print_btn_type = preset_bundle.is_bbl_vendor() ? MainFrame::PrintSelectType::ePrintPlate : MainFrame::PrintSelectType::eSendGcode;
         }
 
         p_mainframe->load_printer_url(url, apikey);
@@ -1250,7 +1250,7 @@ void Sidebar::update_all_preset_comboboxes()
         p->combo_printer->update();
 
     // Orca:: show device tab based on vendor type
-    p_mainframe->show_device(use_bbl_network);
+    p_mainframe->show_device(preset_bundle.use_bbl_device_tab());
     p_mainframe->m_tabpanel->SetSelection(p_mainframe->m_tabpanel->GetSelection());
 }
 
@@ -7069,12 +7069,18 @@ void Plater::priv::on_action_print_plate(SimpleEvent&)
         BOOST_LOG_TRIVIAL(debug) << __FUNCTION__ << ":received print plate event\n" ;
     }
 
-    //BBS
-    if (!m_select_machine_dlg) m_select_machine_dlg = new SelectMachineDialog(q);
-    m_select_machine_dlg->set_print_type(PrintFromType::FROM_NORMAL);
-    m_select_machine_dlg->prepare(partplate_list.get_curr_plate_index());
-    m_select_machine_dlg->ShowModal();
-    record_start_print_preset("print_plate");
+    PresetBundle& preset_bundle = *wxGetApp().preset_bundle;
+    if (preset_bundle.use_bbl_network()) {
+        // BBS
+        if (!m_select_machine_dlg)
+            m_select_machine_dlg = new SelectMachineDialog(q);
+        m_select_machine_dlg->set_print_type(PrintFromType::FROM_NORMAL);
+        m_select_machine_dlg->prepare(partplate_list.get_curr_plate_index());
+        m_select_machine_dlg->ShowModal();
+        record_start_print_preset("print_plate");
+    } else {
+        q->send_gcode_legacy(PLATE_CURRENT_IDX, nullptr, true);
+    }
 }
 
 void Plater::priv::on_action_send_to_multi_machine(SimpleEvent&)
@@ -7104,7 +7110,7 @@ void Plater::priv::on_tab_selection_changing(wxBookCtrlEvent& e)
     sidebar_layout.show = new_sel == MainFrame::tp3DEditor || new_sel == MainFrame::tpPreview;
     update_sidebar();
     int old_sel = e.GetOldSelection();
-    if (wxGetApp().preset_bundle && wxGetApp().preset_bundle->use_bbl_network() && new_sel == MainFrame::tpMonitor) {
+    if (wxGetApp().preset_bundle && wxGetApp().preset_bundle->use_bbl_device_tab() && new_sel == MainFrame::tpMonitor) {
         if (!wxGetApp().getAgent()) {
             e.Veto();
             BOOST_LOG_TRIVIAL(info) << boost::format("skipped tab switch from %1% to %2%, lack of network plugins") % old_sel % new_sel;
@@ -7159,12 +7165,18 @@ void Plater::priv::on_action_print_all(SimpleEvent&)
         BOOST_LOG_TRIVIAL(debug) << __FUNCTION__ << ":received print all event\n" ;
     }
 
-    //BBS
-    if (!m_select_machine_dlg) m_select_machine_dlg = new SelectMachineDialog(q);
-    m_select_machine_dlg->set_print_type(PrintFromType::FROM_NORMAL);
-    m_select_machine_dlg->prepare(PLATE_ALL_IDX);
-    m_select_machine_dlg->ShowModal();
-    record_start_print_preset("print_all");
+    PresetBundle& preset_bundle = *wxGetApp().preset_bundle;
+    if (preset_bundle.use_bbl_network()) {
+        // BBS
+        if (!m_select_machine_dlg)
+            m_select_machine_dlg = new SelectMachineDialog(q);
+        m_select_machine_dlg->set_print_type(PrintFromType::FROM_NORMAL);
+        m_select_machine_dlg->prepare(PLATE_ALL_IDX);
+        m_select_machine_dlg->ShowModal();
+        record_start_print_preset("print_all");
+    } else {
+        q->send_gcode_legacy(PLATE_ALL_IDX, nullptr, true);
+    }
 }
 
 void Plater::priv::on_action_export_gcode(SimpleEvent&)
@@ -12332,7 +12344,7 @@ void Plater::reslice_SLA_until_step(SLAPrintObjectStep step, const ModelObject &
     // and let the background processing start.
     this->p->restart_background_process(state | priv::UPDATE_BACKGROUND_PROCESS_FORCE_RESTART);
 }
-void Plater::send_gcode_legacy(int plate_idx, Export3mfProgressFn proFn)
+void Plater::send_gcode_legacy(int plate_idx, Export3mfProgressFn proFn, bool use_3mf)
 {
     // if physical_printer is selected, send gcode for this printer
     // DynamicPrintConfig* physical_printer_config = wxGetApp().preset_bundle->physical_printers.get_selected_printer_config();
@@ -12344,6 +12356,8 @@ void Plater::send_gcode_legacy(int plate_idx, Export3mfProgressFn proFn)
     if (upload_job.empty())
         return;
 
+    upload_job.upload_data.use_3mf = use_3mf;
+
     // Obtain default output path
     fs::path default_output_file;
     try {
@@ -12362,6 +12376,9 @@ void Plater::send_gcode_legacy(int plate_idx, Export3mfProgressFn proFn)
         return;
     }
     default_output_file = fs::path(Slic3r::fold_utf8_to_ascii(default_output_file.string()));
+    if (use_3mf) {
+        default_output_file.replace_extension("3mf");
+    }
 
     // Repetier specific: Query the server for the list of file groups.
     wxArrayString groups;
@@ -12383,8 +12400,11 @@ void Plater::send_gcode_legacy(int plate_idx, Export3mfProgressFn proFn)
         }
     }
 
-    PrintHostSendDialog dlg(default_output_file, upload_job.printhost->get_post_upload_actions(), groups, storage_paths, storage_names);
+    auto config = get_app_config();
+    PrintHostSendDialog dlg(default_output_file, upload_job.printhost->get_post_upload_actions(), groups, storage_paths, storage_names, config->get_bool("open_device_tab_post_upload"));
     if (dlg.ShowModal() == wxID_OK) {
+        config->set_bool("open_device_tab_post_upload", dlg.switch_to_device_tab());
+        upload_job.switch_to_device_tab    = dlg.switch_to_device_tab();
         upload_job.upload_data.upload_path = dlg.filename();
         upload_job.upload_data.post_action = dlg.post_action();
         upload_job.upload_data.group       = dlg.group();
@@ -12397,6 +12417,19 @@ void Plater::send_gcode_legacy(int plate_idx, Export3mfProgressFn proFn)
                 return;
         }
 
+        if (use_3mf) {
+            // Process gcode
+            const int result = send_gcode(plate_idx, nullptr);
+
+            if (result < 0) {
+                wxString msg = _L("Abnormal print file data. Please slice again");
+                show_error(this, msg, false);
+                return;
+            }
+
+            upload_job.upload_data.source_path = p->m_print_job_data._3mf_path;
+        }
+
         p->export_gcode(fs::path(), false, std::move(upload_job));
     }
 }
diff --git a/src/slic3r/GUI/Plater.hpp b/src/slic3r/GUI/Plater.hpp
index ac2591a156..66d63fd54a 100644
--- a/src/slic3r/GUI/Plater.hpp
+++ b/src/slic3r/GUI/Plater.hpp
@@ -431,7 +431,7 @@ class Plater: public wxPanel
     /* -1: send current gcode if not specified
      * -2: send all gcode to target machine */
     int send_gcode(int plate_idx = -1, Export3mfProgressFn proFn = nullptr);
-    void send_gcode_legacy(int plate_idx = -1, Export3mfProgressFn proFn = nullptr);
+    void send_gcode_legacy(int plate_idx = -1, Export3mfProgressFn proFn = nullptr, bool use_3mf = false);
     int export_config_3mf(int plate_idx = -1, Export3mfProgressFn proFn = nullptr);
     //BBS jump to nonitor after print job finished
     void send_calibration_job_finished(wxCommandEvent &evt);
diff --git a/src/slic3r/GUI/PrintHostDialogs.cpp b/src/slic3r/GUI/PrintHostDialogs.cpp
index 338b60eae0..14a5866635 100644
--- a/src/slic3r/GUI/PrintHostDialogs.cpp
+++ b/src/slic3r/GUI/PrintHostDialogs.cpp
@@ -38,7 +38,7 @@ static const char *CONFIG_KEY_PATH  = "printhost_path";
 static const char *CONFIG_KEY_GROUP = "printhost_group";
 static const char* CONFIG_KEY_STORAGE = "printhost_storage";
 
-PrintHostSendDialog::PrintHostSendDialog(const fs::path &path, PrintHostPostUploadActions post_actions, const wxArrayString &groups, const wxArrayString& storage_paths, const wxArrayString& storage_names)
+PrintHostSendDialog::PrintHostSendDialog(const fs::path &path, PrintHostPostUploadActions post_actions, const wxArrayString &groups, const wxArrayString& storage_paths, const wxArrayString& storage_names, bool switch_to_device_tab)
     : MsgDialog(static_cast<wxWindow*>(wxGetApp().mainframe), _L("Send G-Code to printer host"), _L("Upload to Printer Host with the following filename:"), 0) // Set style = 0 to avoid default creation of the "OK" button. 
                                                                                                                                                                // All buttons will be added later in this constructor 
     , txt_filename(new wxTextCtrl(this, wxID_ANY))
@@ -46,6 +46,7 @@ PrintHostSendDialog::PrintHostSendDialog(const fs::path &path, PrintHostPostUplo
     , combo_storage(storage_names.GetCount() > 1 ? new wxComboBox(this, wxID_ANY, wxEmptyString, wxDefaultPosition, wxDefaultSize, storage_names, wxCB_READONLY) : nullptr)
     , post_upload_action(PrintHostPostUploadAction::None)
     , m_paths(storage_paths)
+    , m_switch_to_device_tab(switch_to_device_tab)
 {
 #ifdef __APPLE__
     txt_filename->OSXDisableAllSmartSubstitutions();
@@ -97,6 +98,22 @@ PrintHostSendDialog::PrintHostSendDialog(const fs::path &path, PrintHostPostUplo
 
     txt_filename->SetValue(recent_path);
 
+    auto checkbox_sizer = new wxBoxSizer(wxHORIZONTAL);
+    auto checkbox       = new ::CheckBox(this, wxID_APPLY);
+    checkbox->SetValue(m_switch_to_device_tab);
+    checkbox->Bind(wxEVT_TOGGLEBUTTON, [this](wxCommandEvent& e) {
+        m_switch_to_device_tab = e.IsChecked();
+        e.Skip();
+    });
+    checkbox_sizer->Add(checkbox, 0, wxALL | wxALIGN_CENTER, FromDIP(2));
+
+    auto checkbox_text = new wxStaticText(this, wxID_ANY, _L("Switch to Device tab after upload."), wxDefaultPosition, wxDefaultSize, 0);
+    checkbox_sizer->Add(checkbox_text, 0, wxALL | wxALIGN_CENTER, FromDIP(2));
+    checkbox_text->SetFont(::Label::Body_13);
+    checkbox_text->SetForegroundColour(StateColor::darkModeColorFor(wxColour("#323A3D")));
+    content_sizer->Add(checkbox_sizer);
+    content_sizer->AddSpacer(VERT_SPACING);
+
     if (size_t extension_start = recent_path.find_last_of('.'); extension_start != std::string::npos)
         m_valid_suffix = recent_path.substr(extension_start);
     // .gcode suffix control
diff --git a/src/slic3r/GUI/PrintHostDialogs.hpp b/src/slic3r/GUI/PrintHostDialogs.hpp
index b3f5504050..8befa21d98 100644
--- a/src/slic3r/GUI/PrintHostDialogs.hpp
+++ b/src/slic3r/GUI/PrintHostDialogs.hpp
@@ -26,11 +26,12 @@ namespace GUI {
 class PrintHostSendDialog : public GUI::MsgDialog
 {
 public:
-    PrintHostSendDialog(const boost::filesystem::path &path, PrintHostPostUploadActions post_actions, const wxArrayString& groups, const wxArrayString& storage_paths, const wxArrayString& storage_names);
+    PrintHostSendDialog(const boost::filesystem::path &path, PrintHostPostUploadActions post_actions, const wxArrayString& groups, const wxArrayString& storage_paths, const wxArrayString& storage_names, bool switch_to_device_tab);
     boost::filesystem::path filename() const;
     PrintHostPostUploadAction post_action() const;
     std::string group() const;
     std::string storage() const;
+    bool switch_to_device_tab() const {return m_switch_to_device_tab;}
 
     virtual void EndModal(int ret) override;
 private:
@@ -41,6 +42,7 @@ class PrintHostSendDialog : public GUI::MsgDialog
     wxString    m_valid_suffix;
     wxString    m_preselected_storage;
     wxArrayString m_paths;
+    bool m_switch_to_device_tab;
 };
 
 
diff --git a/src/slic3r/Utils/Http.cpp b/src/slic3r/Utils/Http.cpp
index 88d9acf934..995bf19374 100644
--- a/src/slic3r/Utils/Http.cpp
+++ b/src/slic3r/Utils/Http.cpp
@@ -86,6 +86,13 @@ std::unique_ptr<CurlGlobalInit> CurlGlobalInit::instance;
 std::map<std::string, std::string> extra_headers;
 std::mutex g_mutex;
 
+struct form_file
+{
+    fs::ifstream ifs;
+    boost::filesystem::ifstream::off_type init_offset;
+    size_t                                content_length;
+};
+
 struct Http::priv
 {
 	enum {
@@ -103,7 +110,7 @@ struct Http::priv
 	std::string buffer;
 	// Used for storing file streams added as multipart form parts
 	// Using a deque here because unlike vector it doesn't ivalidate pointers on insertion
-	std::deque<fs::ifstream> form_files;
+	std::deque<form_file> form_files;
 	std::string postfields;
 	std::string error_buffer;    // Used for CURLOPT_ERRORBUFFER
     std::string headers;
@@ -130,7 +137,7 @@ struct Http::priv
 
 	void set_timeout_connect(long timeout);
     void set_timeout_max(long timeout);
-	void form_add_file(const char *name, const fs::path &path, const char* filename);
+	void form_add_file(const char *name, const fs::path &path, const char* filename, boost::filesystem::ifstream::off_type offset, size_t length);
 	/* mime */
 	void mime_form_add_text(const char* name, const char* value);
 	void mime_form_add_file(const char* name, const char* path);
@@ -254,15 +261,27 @@ int Http::priv::xfercb_legacy(void *userp, double dltotal, double dlnow, double
 
 size_t Http::priv::form_file_read_cb(char *buffer, size_t size, size_t nitems, void *userp)
 {
-	auto stream = reinterpret_cast<fs::ifstream*>(userp);
+    auto f = reinterpret_cast<form_file*>(userp);
 
 	try {
-		stream->read(buffer, size * nitems);
+	    size_t max_read_size = size * nitems;
+        if (f->content_length == 0) {
+			// Unlimited
+            f->ifs.read(buffer, max_read_size);
+        } else {
+            unsigned long long read_size = f->ifs.tellg() - f->init_offset;
+            if (read_size >= f->content_length) {
+                return 0;
+            }
+
+            max_read_size = std::min(max_read_size, size_t(f->content_length - read_size));
+            f->ifs.read(buffer, max_read_size);
+        }
 	} catch (const std::exception &) {
 		return CURL_READFUNC_ABORT;
 	}
 
-	return stream->gcount();
+	return f->ifs.gcount();
 }
 
 size_t Http::priv::headers_cb(char *buffer, size_t size, size_t nitems, void *userp)
@@ -286,7 +305,7 @@ void Http::priv::set_timeout_max(long timeout)
     ::curl_easy_setopt(curl, CURLOPT_TIMEOUT, timeout);
 }
 
-void Http::priv::form_add_file(const char *name, const fs::path &path, const char* filename)
+void Http::priv::form_add_file(const char *name, const fs::path &path, const char* filename, boost::filesystem::ifstream::off_type offset, size_t length)
 {
 	// We can't use CURLFORM_FILECONTENT, because curl doesn't support Unicode filenames on Windows
 	// and so we use CURLFORM_STREAM with boost ifstream to read the file.
@@ -295,18 +314,21 @@ void Http::priv::form_add_file(const char *name, const fs::path &path, const cha
 		filename = path.string().c_str();
 	}
 
-	form_files.emplace_back(path, std::ios::in | std::ios::binary);
-	auto &stream = form_files.back();
-	stream.seekg(0, std::ios::end);
-	size_t size = stream.tellg();
-	stream.seekg(0);
+	form_files.emplace_back(form_file{{path, std::ios::in | std::ios::binary}, offset, length});
+	auto &f = form_files.back();
+    size_t size = length;
+    if (length == 0) {
+        f.ifs.seekg(0, std::ios::end);
+        size = f.ifs.tellg() - offset;
+    }
+    f.ifs.seekg(offset);
 
 	if (filename != nullptr) {
 		::curl_formadd(&form, &form_end,
 			CURLFORM_COPYNAME, name,
 			CURLFORM_FILENAME, filename,
 			CURLFORM_CONTENTTYPE, "application/octet-stream",
-			CURLFORM_STREAM, static_cast<void*>(&stream),
+			CURLFORM_STREAM, static_cast<void*>(&f),
 			CURLFORM_CONTENTSLENGTH, static_cast<long>(size),
 			CURLFORM_END
 		);
@@ -587,9 +609,9 @@ Http& Http::form_add(const std::string &name, const std::string &contents)
 	return *this;
 }
 
-Http& Http::form_add_file(const std::string &name, const fs::path &path)
+Http& Http::form_add_file(const std::string &name, const fs::path &path, boost::filesystem::ifstream::off_type offset, size_t length)
 {
-	if (p) { p->form_add_file(name.c_str(), path.c_str(), nullptr); }
+	if (p) { p->form_add_file(name.c_str(), path.c_str(), nullptr, offset, length); }
 	return *this;
 }
 
@@ -607,15 +629,15 @@ Http& Http::mime_form_add_file(std::string &name, const char* path)
 }
 
 
-Http& Http::form_add_file(const std::wstring& name, const fs::path& path)
+Http& Http::form_add_file(const std::wstring& name, const fs::path& path, boost::filesystem::ifstream::off_type offset, size_t length)
 {
-	if (p) { p->form_add_file((char*)name.c_str(), path.c_str(), nullptr); }
+	if (p) { p->form_add_file((char*)name.c_str(), path.c_str(), nullptr, offset, length); }
 	return *this;
 }
 
-Http& Http::form_add_file(const std::string &name, const fs::path &path, const std::string &filename)
+Http& Http::form_add_file(const std::string &name, const fs::path &path, const std::string &filename, boost::filesystem::ifstream::off_type offset, size_t length)
 {
-	if (p) { p->form_add_file(name.c_str(), path.c_str(), filename.c_str()); }
+	if (p) { p->form_add_file(name.c_str(), path.c_str(), filename.c_str(), offset, length); }
 	return *this;
 }
 
diff --git a/src/slic3r/Utils/Http.hpp b/src/slic3r/Utils/Http.hpp
index 1218a562a6..51a49d44e0 100644
--- a/src/slic3r/Utils/Http.hpp
+++ b/src/slic3r/Utils/Http.hpp
@@ -121,15 +121,15 @@ class Http : public std::enable_shared_from_this<Http> {
 	// Add a HTTP multipart form field
 	Http& form_add(const std::string &name, const std::string &contents);
 	// Add a HTTP multipart form file data contents, `name` is the name of the part
-	Http& form_add_file(const std::string &name, const boost::filesystem::path &path);
+	Http& form_add_file(const std::string &name, const boost::filesystem::path &path, boost::filesystem::ifstream::off_type offset = 0, size_t length = 0);
 	// Add a HTTP mime form field
 	Http& mime_form_add_text(std::string& name, std::string& value);
 	// Add a HTTP mime form file
 	Http& mime_form_add_file(std::string& name, const char* path);
 	// Same as above except also override the file's filename with a wstring type
-	Http& form_add_file(const std::wstring& name, const boost::filesystem::path& path);
+    Http& form_add_file(const std::wstring& name, const boost::filesystem::path& path, boost::filesystem::ifstream::off_type offset = 0, size_t length = 0);
 	// Same as above except also override the file's filename with a custom one
-	Http& form_add_file(const std::string &name, const boost::filesystem::path &path, const std::string &filename);
+	Http& form_add_file(const std::string &name, const boost::filesystem::path &path, const std::string &filename, boost::filesystem::ifstream::off_type offset = 0, size_t length = 0);
 
 #ifdef WIN32
 	// Tells libcurl to ignore certificate revocation checks in case of missing or offline distribution points for those SSL backends where such behavior is present.
diff --git a/src/slic3r/Utils/PrintHost.cpp b/src/slic3r/Utils/PrintHost.cpp
index b6dff85052..f88dceb14a 100644
--- a/src/slic3r/Utils/PrintHost.cpp
+++ b/src/slic3r/Utils/PrintHost.cpp
@@ -21,6 +21,7 @@
 #include "MKS.hpp"
 #include "ESP3D.hpp"
 #include "../GUI/PrintHostDialogs.hpp"
+#include "../GUI/MainFrame.hpp"
 #include "Obico.hpp"
 #include "Flashforge.hpp"
 #include "SimplyPrint.hpp"
@@ -314,6 +315,10 @@ void PrintHostJobQueue::priv::perform_job(PrintHostJob the_job)
 
     if (success) {
         emit_progress(100);
+        if (the_job.switch_to_device_tab) {
+            const auto mainframe = GUI::wxGetApp().mainframe;
+            mainframe->request_select_tab(MainFrame::TabPosition::tpMonitor);
+        }
     }
 }
 
diff --git a/src/slic3r/Utils/PrintHost.hpp b/src/slic3r/Utils/PrintHost.hpp
index 50699cb4d8..83bd730e42 100644
--- a/src/slic3r/Utils/PrintHost.hpp
+++ b/src/slic3r/Utils/PrintHost.hpp
@@ -29,6 +29,7 @@ ENABLE_ENUM_BITMASK_OPERATORS(PrintHostPostUploadAction);
 
 struct PrintHostUpload
 {
+    bool use_3mf;
     boost::filesystem::path source_path;
     boost::filesystem::path upload_path;
     
@@ -85,6 +86,7 @@ struct PrintHostJob
 {
     PrintHostUpload upload_data;
     std::unique_ptr<PrintHost> printhost;
+    bool switch_to_device_tab{false};
     bool cancelled = false;
 
     PrintHostJob() {}
@@ -92,6 +94,7 @@ struct PrintHostJob
     PrintHostJob(PrintHostJob &&other)
         : upload_data(std::move(other.upload_data))
         , printhost(std::move(other.printhost))
+        , switch_to_device_tab(other.switch_to_device_tab)
         , cancelled(other.cancelled)
     {}
 
@@ -103,7 +106,8 @@ struct PrintHostJob
     PrintHostJob& operator=(PrintHostJob &&other)
     {
         upload_data = std::move(other.upload_data);
-        printhost = std::move(other.printhost);
+        printhost   = std::move(other.printhost);
+        switch_to_device_tab = other.switch_to_device_tab;
         cancelled = other.cancelled;
         return *this;
     }
diff --git a/src/slic3r/Utils/SimplyPrint.cpp b/src/slic3r/Utils/SimplyPrint.cpp
index 2fc72fb9ef..d3f9ddc083 100644
--- a/src/slic3r/Utils/SimplyPrint.cpp
+++ b/src/slic3r/Utils/SimplyPrint.cpp
@@ -9,17 +9,36 @@
 #include "libslic3r/Utils.hpp"
 #include "slic3r/GUI/I18N.hpp"
 #include "slic3r/GUI/format.hpp"
+#include "slic3r/GUI/GUI_App.hpp"
+#include "slic3r/GUI/MainFrame.hpp"
 
 
 namespace Slic3r {
 
+// to make testing easier
+//#define SIMPLYPRINT_TEST
+
+#ifdef SIMPLYPRINT_TEST
+#define URL_BASE_HOME "https://test.simplyprint.io"
+#define URL_BASE_API "https://testapi.simplyprint.io"
+#else
+#define URL_BASE_HOME "https://simplyprint.io"
+#define URL_BASE_API "https://api.simplyprint.io"
+#endif
+
 static constexpr boost::asio::ip::port_type CALLBACK_PORT = 21328;
 static const std::string CALLBACK_URL = "http://localhost:21328/callback";
 static const std::string RESPONSE_TYPE  = "code";
 static const std::string CLIENT_ID = "simplyprintorcaslicer";
 static const std::string CLIENT_SCOPES = "user.read files.temp_upload";
 static const std::string OAUTH_CREDENTIAL_PATH = "simplyprint_oauth.json";
-static const std::string TOKEN_URL = "https://simplyprint.io/api/oauth2/Token";
+static const std::string TOKEN_URL = URL_BASE_API"/oauth2/Token";
+#ifdef SIMPLYPRINT_TEST
+static constexpr uint64_t MAX_SINGLE_UPLOAD_FILE_SIZE = 100000ull; // Max file size that can be uploaded in a single http request
+#else
+static constexpr uint64_t MAX_SINGLE_UPLOAD_FILE_SIZE = 100000000ull; // Max file size that can be uploaded in a single http request
+#endif
+static const std::string CHUNCK_RECEIVE_URL = URL_BASE_API"/0/files/ChunkReceive";
 
 static std::string generate_verification_code(int code_length = 32)
 {
@@ -57,6 +76,9 @@ static std::string url_encode(const std::vector<std::pair<std::string, std::stri
     q.reserve(query.size());
 
     std::transform(query.begin(), query.end(), std::back_inserter(q), [](const auto& kv) {
+        if (kv.second.empty()) {
+            return Http::url_encode(kv.first);
+        }
         return Http::url_encode(kv.first) + "=" + Http::url_encode(kv.second);
     });
 
@@ -65,6 +87,19 @@ static std::string url_encode(const std::vector<std::pair<std::string, std::stri
 
 static void set_auth(Http& http, const std::string& access_token) { http.header("Authorization", "Bearer " + access_token); }
 
+static bool should_open_in_external_browser()
+{
+    const auto& app = wxGetApp();
+
+    if (app.preset_bundle->use_bbl_device_tab()) {
+        // When using bbl device tab, we always need to open external browser
+        return true;
+    }
+
+    // Otherwise, if user choose to switch to device tab, then don't bother opening external browser
+    return !app.app_config->get_bool("open_device_tab_post_upload");
+}
+
 SimplyPrint::SimplyPrint(DynamicPrintConfig* config)
 {
     cred_file = (boost::filesystem::path(data_dir()) / OAUTH_CREDENTIAL_PATH).make_preferred().string();
@@ -87,7 +122,7 @@ GUI::OAuthParams SimplyPrint::get_oauth_params() const
         {"code_challenge", code_challenge},
         {"code_challenge_method", "S256"},
     };
-    const auto login_url = (boost::format("https://simplyprint.io/panel/oauth2/authorize?%s") % url_encode(query_parameters)).str();
+    const auto login_url = (boost::format(URL_BASE_HOME"/panel/oauth2/authorize?%s") % url_encode(query_parameters)).str();
 
     return GUI::OAuthParams{
         login_url,
@@ -96,8 +131,8 @@ GUI::OAuthParams SimplyPrint::get_oauth_params() const
         CALLBACK_URL,
         CLIENT_SCOPES,
         RESPONSE_TYPE,
-        "https://simplyprint.io/login-success",
-        "https://simplyprint.io/login-success",
+        URL_BASE_HOME"/login-success",
+        URL_BASE_HOME"/login-success",
         TOKEN_URL,
         verification_code,
         state,
@@ -226,7 +261,7 @@ bool SimplyPrint::test(wxString& curl_msg) const
 
     return do_api_call(
         [](bool is_retry) {
-            auto http = Http::get("https://api.simplyprint.io/oauth2/TokenInfo");
+            auto http = Http::get(URL_BASE_API"/oauth2/TokenInfo");
             http.header("Accept", "application/json");
             return http;
         },
@@ -241,30 +276,31 @@ bool SimplyPrint::test(wxString& curl_msg) const
         });
 }
 
-bool SimplyPrint::upload(PrintHostUpload upload_data, ProgressFn prorgess_fn, ErrorFn error_fn, InfoFn info_fn) const
+bool SimplyPrint::do_temp_upload(const boost::filesystem::path& file_path,
+                                 const std::string&             chunk_id,
+                                 const std::string&             filename,
+                                 ProgressFn                     prorgess_fn,
+                                 ErrorFn                        error_fn) const
 {
-    if (cred.find("access_token") == cred.end()) {
-        error_fn(_L("SimplyPrint account not linked. Go to Connect options to set it up."));
-        return false;
-    }
-
-    // If file is over 100 MB, fail
-    if (boost::filesystem::file_size(upload_data.source_path) > 104857600ull) {
-        error_fn(_L("File size exceeds the 100MB upload limit. Please upload your file through the panel."));
+    if (file_path.empty() == chunk_id.empty()) {
+        BOOST_LOG_TRIVIAL(error) << "SimplyPrint: Invalid arguments: both file_path and chunk_id are set or not provided";
+        error_fn(_L("Internel error"));
         return false;
     }
 
-    const auto filename = upload_data.upload_path.filename().string();
-
     return do_api_call(
-        [&upload_data, &prorgess_fn, &filename](bool is_retry) {
-            auto http = Http::post("https://simplyprint.io/api/files/TempUpload");
-            http.form_add_file("file", upload_data.source_path.string(), filename)
-                .on_progress([&prorgess_fn](Http::Progress progress, bool& cancel) { prorgess_fn(std::move(progress), cancel); });
+        [&file_path, &chunk_id, &prorgess_fn, &filename](bool is_retry) {
+            auto http = Http::post(URL_BASE_HOME"/api/files/TempUpload");
+            if (!file_path.empty()) {
+                http.form_add_file("file", file_path, filename);
+            } else {
+                http.form_add("chunkId", chunk_id);
+            }
+            http.on_progress([&prorgess_fn](Http::Progress progress, bool& cancel) { prorgess_fn(std::move(progress), cancel); });
 
             return http;
         },
-        [&error_fn, &filename](std::string body, unsigned status) {
+        [&error_fn, &filename, this](std::string body, unsigned status) {
             BOOST_LOG_TRIVIAL(info) << boost::format("SimplyPrint: File uploaded: HTTP %1%: %2%") % status % body;
 
             // Get file UUID
@@ -283,8 +319,15 @@ bool SimplyPrint::upload(PrintHostUpload upload_data, ProgressFn prorgess_fn, Er
             const std::string uuid = j["uuid"];
 
             // Launch external browser for file importing after uploading
-            const auto url = "https://simplyprint.io/panel?" + url_encode({{"import", "tmp:" + uuid}, {"filename", filename}});
-            wxLaunchDefaultBrowser(url);
+            const auto url = URL_BASE_HOME"/panel?" + url_encode({{"import", "tmp:" + uuid}, {"filename", filename}});
+
+            if (should_open_in_external_browser()) {
+                wxLaunchDefaultBrowser(url);
+            } else {
+                const auto mainframe = GUI::wxGetApp().mainframe;
+                mainframe->request_select_tab(MainFrame::TabPosition::tpMonitor);
+                mainframe->load_printer_url(url);
+            }
 
             return true;
         },
@@ -295,4 +338,155 @@ bool SimplyPrint::upload(PrintHostUpload upload_data, ProgressFn prorgess_fn, Er
         });
 }
 
+bool SimplyPrint::do_chunk_upload(const boost::filesystem::path& file_path, const std::string& filename, ProgressFn prorgess_fn, ErrorFn error_fn) const
+{
+    const auto file_size = boost::filesystem::file_size(file_path);
+#ifdef SIMPLYPRINT_TEST
+    constexpr auto buffer_size = MAX_SINGLE_UPLOAD_FILE_SIZE;
+#else
+    constexpr auto buffer_size = MAX_SINGLE_UPLOAD_FILE_SIZE - 1000000;
+#endif
+
+    const auto chunk_amount = (size_t)ceil((double) file_size / buffer_size);
+
+    std::string chunk_id;
+    std::string delete_token;
+
+    // Tell SimplyPrint that the upload has failed and the chunks should be deleted
+    // Note: any error happens here won't be notified to the user
+    const auto clean_up = [this, &chunk_id, &delete_token]() {
+        if (chunk_id.empty()) {
+            // The initial upload failed, do nothing
+            BOOST_LOG_TRIVIAL(warning) << "SimplyPrint: Initial chunk upload failed, skip delete";
+            return;
+        }
+
+        assert(!delete_token.empty());
+
+        BOOST_LOG_TRIVIAL(info) << boost::format("SimplyPrint: Deleting file chunk %s...") % chunk_id;
+        const std::vector<std::pair<std::string, std::string>> query_parameters{
+            {"id", chunk_id},
+            {"temp", "true"},
+            {"delete", delete_token},
+        };
+        const auto url = (boost::format("%s?%s") % CHUNCK_RECEIVE_URL % url_encode(query_parameters)).str();
+        do_api_call(
+            [&url](bool is_retry) {
+                auto http = Http::get(url);
+                return http;
+            },
+            [&chunk_id](std::string body, unsigned status) {
+                BOOST_LOG_TRIVIAL(info) << boost::format("SimplyPrint: File chunk %1% deleted: HTTP %2%: %3%") % chunk_id % status % body;
+                return true;
+            },
+            [&chunk_id](std::string body, std::string error, unsigned status) {
+                BOOST_LOG_TRIVIAL(warning) << boost::format("SimplyPrint: Error deleting file chunk %1%: %2%, HTTP %3%, body: `%4%`") %
+                                                  chunk_id % error % status % body;
+                return false;
+            });
+    };
+
+    // Do chunk upload
+    for (size_t i = 0; i < chunk_amount; i++) {
+        std::string url;
+        {
+            std::vector<std::pair<std::string, std::string>> query_parameters{
+                {"i", std::to_string(i)},
+                {"temp", "true"},
+            };
+            if (i == 0) {
+                query_parameters.emplace_back("filename", filename);
+                query_parameters.emplace_back("chunks", std::to_string(chunk_amount));
+                query_parameters.emplace_back("totalsize", std::to_string(file_size));
+            } else {
+                query_parameters.emplace_back("id", chunk_id);
+            }
+            url = (boost::format("%s?%s") % CHUNCK_RECEIVE_URL % url_encode(query_parameters)).str();
+        }
+
+        // Calculate the offset and length of current chunk
+        const boost::filesystem::ifstream::off_type offset = i * buffer_size;
+        const size_t length = i == (chunk_amount - 1) ? file_size - offset : buffer_size;
+
+        const bool succ = do_api_call(
+            [&url, &file_path, &filename, i, chunk_amount, file_size, offset, length, prorgess_fn](bool is_retry) {
+                BOOST_LOG_TRIVIAL(info) << boost::format("SimplyPrint: Start uploading file chunk [%1%/%2%]...") % (i + 1) % chunk_amount;
+                auto http = Http::post(url);
+                http.form_add_file("file", file_path, filename, offset, length);
+
+                http.on_progress([&prorgess_fn, file_size, offset](Http::Progress progress, bool& cancel) {
+                    progress.ultotal = file_size;
+                    progress.ulnow += offset;
+
+                    prorgess_fn(std::move(progress), cancel);
+                });
+
+                return http;
+            },
+            [&error_fn, i, chunk_amount, this, &chunk_id, &delete_token](std::string body, unsigned status) {
+                BOOST_LOG_TRIVIAL(info) << boost::format("SimplyPrint: File chunk [%1%/%2%] uploaded: HTTP %3%: %4%") % (i + 1) % chunk_amount % status % body;
+                if (i == 0) {
+                    // First chunk, parse chunk id
+                    const auto j = nlohmann::json::parse(body, nullptr, false, true);
+                    if (j.is_discarded()) {
+                        BOOST_LOG_TRIVIAL(error) << "SimplyPrint: Invalid or no JSON data on ChunkReceive: " << body;
+                        error_fn(_L("Unknown error"));
+                        return false;
+                    }
+
+                    if (j.find("id") == j.end() || j.find("delete_token") == j.end()) {
+                        BOOST_LOG_TRIVIAL(error) << "SimplyPrint: Invalid or no JSON data on ChunkReceive: " << body;
+                        error_fn(_L("Unknown error"));
+                        return false;
+                    }
+
+                    const unsigned long id = j["id"];
+
+                    chunk_id = std::to_string(id);
+                    delete_token = j["delete_token"];
+                }
+                return true;
+            },
+            [this, &error_fn, i, chunk_amount](std::string body, std::string error, unsigned status) {
+                BOOST_LOG_TRIVIAL(error) << boost::format("SimplyPrint: Error uploading file chunk [%1%/%2%]: %3%, HTTP %4%, body: `%5%`") %
+                                                (i + 1) % chunk_amount % error % status % body;
+                error_fn(format_error(body, error, status));
+                return false;
+            });
+
+        if (!succ) {
+            clean_up();
+            return false;
+        }
+    }
+
+    assert(!chunk_id.empty());
+
+    // Finally, complete the upload using the chunk id
+    const bool succ = do_temp_upload({}, chunk_id, filename, prorgess_fn, error_fn);
+    if (!succ) {
+        clean_up();
+    }
+
+    return succ;
+}
+
+
+bool SimplyPrint::upload(PrintHostUpload upload_data, ProgressFn prorgess_fn, ErrorFn error_fn, InfoFn info_fn) const
+{
+    if (cred.find("access_token") == cred.end()) {
+        error_fn(_L("SimplyPrint account not linked. Go to Connect options to set it up."));
+        return false;
+    }
+    const auto filename = upload_data.upload_path.filename().string();
+
+    if (boost::filesystem::file_size(upload_data.source_path) > MAX_SINGLE_UPLOAD_FILE_SIZE) {
+        // If file is over 100 MB, do chunk upload
+        return do_chunk_upload(upload_data.source_path, filename, prorgess_fn, error_fn);
+    } else {
+        // Normal upload
+        return do_temp_upload(upload_data.source_path, {}, filename, prorgess_fn, error_fn);
+    }
+}
+
 } // namespace Slic3r
diff --git a/src/slic3r/Utils/SimplyPrint.hpp b/src/slic3r/Utils/SimplyPrint.hpp
index 2b56764d7c..3804324724 100644
--- a/src/slic3r/Utils/SimplyPrint.hpp
+++ b/src/slic3r/Utils/SimplyPrint.hpp
@@ -15,10 +15,37 @@ class SimplyPrint : public PrintHost
 
     void load_oauth_credential();
 
+    /**
+     * \brief Call the given SimplyPrint API, and if the token expired do a token refresh then retry
+     * \param build_request the http request builder
+     * \param on_complete 
+     * \param on_error 
+     * \return whether the API call succeeded
+     */
     bool do_api_call(std::function<Http(bool /*is_retry*/)>                                                           build_request,
                      std::function<bool(std::string /* body */, unsigned /* http_status */)>                          on_complete,
                      std::function<bool(std::string /* body */, std::string /* error */, unsigned /* http_status */)> on_error) const;
 
+    /**
+     * \brief Upload a temp file and open SimplyPrint panel for file importing
+     * \param file_path for file smaller than 100MB, this is the file path, otherwise must left empty
+     * \param chunk_id for file greater than 100MB, this is the chunk id returned by the ChunkReceive API, otherwise must left empty
+     * \param filename the target file name
+     * \param prorgess_fn 
+     * \param error_fn 
+     * \return whether upload succeeded
+     */
+    bool do_temp_upload(const boost::filesystem::path& file_path,
+                        const std::string&             chunk_id,
+                        const std::string&             filename,
+                        ProgressFn                     prorgess_fn,
+                        ErrorFn                        error_fn) const;
+
+    bool do_chunk_upload(const boost::filesystem::path& file_path,
+                         const std::string&             filename,
+                         ProgressFn                     prorgess_fn,
+                         ErrorFn                        error_fn) const;
+
 public:
     SimplyPrint(DynamicPrintConfig* config);
     ~SimplyPrint() override = default;