diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 0bbaac16..24b85e38 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -60,41 +60,6 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
-  build-ubuntu16:
-    name: Ubuntu 16.04
-    runs-on: ubuntu-16.04
-    steps:
-      - uses: actions/checkout@master
-
-      - name: Build
-        id: build
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y libboost-all-dev
-          build_folder="build/debug"
-          ccx_ver=${GITHUB_SHA::7}
-          ccx_ver_folder=$(echo $ccx_ver | sed 's/\.//g')
-          release_name=ccx-cli-ubuntu-1604-dev"$ccx_ver"
-          mkdir -p "$build_folder"
-          cd "$build_folder"
-          cmake ../.. -DCMAKE_BUILD_TYPE=Debug
-          make -j2
-          mkdir -p "$release_name"
-          exeFiles=()
-          for f in src/*; do [[ -x $f && -f $f ]] && exeFiles+=( "$f" ); done
-          strip "${exeFiles[@]}"
-          cp "${exeFiles[@]}" "$release_name/"
-          echo "::set-output name=release_name::${release_name}.zip"
-          echo "::set-output name=artifact_path::$build_folder/$release_name"
-
-      - name: Upload To GH Artifacts
-        uses: actions/upload-artifact@v1.0.0
-        with:
-          name: ${{ steps.build.outputs.release_name }}
-          path: ${{ steps.build.outputs.artifact_path }}
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
   build-ubuntu18:
     name: Ubuntu 18.04
     runs-on: ubuntu-18.04
@@ -181,7 +146,7 @@ jobs:
           brew install gcc boost
           mkdir "$build_folder"
           cd "$build_folder"
-          cmake -DCMAKE_C_FLAGS="-mmacosx-version-min=10.12" -DCMAKE_CXX_FLAGS="-mmacosx-version-min=10.12" ..
+          cmake -DCMAKE_C_FLAGS="-mmacosx-version-min=10.12" -DCMAKE_CXX_FLAGS="-mmacosx-version-min=10.12" -DSTATIC=ON ..
           make -j2
           mkdir "$release_name"
           exeFiles=()
diff --git a/.github/workflows/macOS.yml b/.github/workflows/macOS.yml
index 51fe605f..4cfae662 100644
--- a/.github/workflows/macOS.yml
+++ b/.github/workflows/macOS.yml
@@ -21,7 +21,7 @@ jobs:
           brew install gcc boost
           mkdir "$build_folder"
           cd "$build_folder"
-          cmake -DCMAKE_C_FLAGS="-mmacosx-version-min=10.12" -DCMAKE_CXX_FLAGS="-mmacosx-version-min=10.12" ..
+          cmake -DCMAKE_C_FLAGS="-mmacosx-version-min=10.12" -DCMAKE_CXX_FLAGS="-mmacosx-version-min=10.12" -DSTATIC=ON ..
           make -j2
           mkdir "$release_name"
           exeFiles=()
diff --git a/.github/workflows/ubuntu16.yml b/.github/workflows/ubuntu16.yml
deleted file mode 100644
index b387202e..00000000
--- a/.github/workflows/ubuntu16.yml
+++ /dev/null
@@ -1,50 +0,0 @@
-name: Ubuntu 16.04
-
-on:
-  push:
-    tags:
-      - "*"
-
-jobs:
-  build-ubuntu16:
-    name: Ubuntu 16.04
-    runs-on: ubuntu-16.04
-    steps:
-      - uses: actions/checkout@master
-
-      - name: Build
-        id: build
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y libboost-all-dev
-          build_folder="build/debug"
-          ccx_ver=$(echo "$GITHUB_REF" | sed 's|refs/tags/||')
-          ccx_ver_folder=$(echo $ccx_ver | sed 's/\.//g')
-          release_name=ccx-cli-ubuntu-1604-v"$ccx_ver"
-          mkdir -p "$build_folder"
-          cd "$build_folder"
-          cmake ../..
-          make -j2
-          mkdir -p "$release_name/$ccx_ver_folder"
-          exeFiles=()
-          for f in src/*; do [[ -x $f && -f $f ]] && exeFiles+=( "$f" ); done
-          cp "${exeFiles[@]}" "$release_name/$ccx_ver_folder"
-          cd "$release_name"
-          tar -czf "$release_name".tar.gz "$ccx_ver_folder"
-          sha256=$(shasum -a 256 "$release_name".tar.gz | awk '{print toupper($1)}')
-          asset_path="./$build_folder/$release_name/$release_name.tar.gz"
-          echo "::set-output name=sha256::${sha256}"
-          echo "::set-output name=release_name::${release_name}.tar.gz"
-          echo "::set-output name=asset_path::${asset_path}"
-          echo "::set-output name=ccx_ver::${ccx_ver}"
-
-      - name: Create Release
-        uses: softprops/action-gh-release@v1
-        with:
-          files: ${{ steps.build.outputs.asset_path }}
-          name: Conceal Core CLI v${{ steps.build.outputs.ccx_ver }}
-          body: |
-            **${{ steps.build.outputs.release_name }}**
-            ${{ steps.build.outputs.sha256 }}
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.vscode/settings.json b/.vscode/settings.json
index c959bf34..b8deb0a1 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -76,26 +76,6 @@
         "xthread": "cpp",
         "sparse_hash_map": "cpp",
         "sparse_hash_set": "cpp",
-        "sparsetable": "cpp",
-        "bitset": "cpp",
-        "clocale": "cpp",
-        "codecvt": "cpp",
-        "complex": "cpp",
-        "csignal": "cpp",
-        "cstdarg": "cpp",
-        "cwctype": "cpp",
-        "locale": "cpp",
-        "optional": "cpp",
-        "regex": "cpp",
-        "scoped_allocator": "cpp",
-        "shared_mutex": "cpp",
-        "string_view": "cpp",
-        "strstream": "cpp",
-        "typeindex": "cpp",
-        "valarray": "cpp",
-        "variant": "cpp",
-        "xlocbuf": "cpp",
-        "xlocmes": "cpp",
-        "*.ipp": "cpp"
+        "sparsetable": "cpp"
     }
 }
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 27a1df69..d6b9e272 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,8 @@
 cmake_minimum_required(VERSION 2.8.6)
 
 include(CheckCXXCompilerFlag)
-set(VERSION "0.2")
+set(VERSION "6.4.9")
+set(VERSION_BUILD_NO "Poseidon")
 # Packaged from main commits
 set(COMMIT 72946d9)
 set(REFS " (HEAD -> master)")
@@ -250,6 +251,7 @@ if(ARM)
 endif()
 
 if(STATIC)
+  set(Boost_NO_BOOST_CMAKE ON)
   set(Boost_USE_STATIC_LIBS ON)
   set(Boost_USE_STATIC_RUNTIME ON)
 endif()
@@ -279,18 +281,25 @@ if (NOT COMMIT_ID_IN_VERSION)
   set(VERSION "${VERSION}-unknown")
   configure_file("src/version.h.in" "version/version.h")
   add_custom_target(version ALL)
-elseif(DEFINED COMMIT)
-  string(REPLACE "." "\\." VERSION_RE "${VERSION}")
-  if(NOT REFS MATCHES "(\\(|, )tag: v${VERSION_RE}(\\)|, )")
-    set(VERSION "${VERSION}-g${COMMIT}")
-  endif()
-  configure_file("src/version.h.in" "version/version.h")
-  add_custom_target(version ALL)
 else()
   find_package(Git QUIET)
   if(Git_FOUND OR GIT_FOUND)
     message(STATUS "Found Git: ${GIT_EXECUTABLE}")
-    add_custom_target(version ALL "${CMAKE_COMMAND}" "-D" "VERSION=${VERSION}" "-D" "GIT=${GIT_EXECUTABLE}" "-D" "TO=${CMAKE_BINARY_DIR}/version/version.h" "-P" "src/version.cmake" WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}")
+    execute_process(
+      COMMAND git log -1 --format=%h
+      WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+      OUTPUT_VARIABLE COMMIT
+      OUTPUT_STRIP_TRAILING_WHITESPACE
+    )
+    configure_file("src/version.h.in" "version/version.h")
+    add_custom_target(version ALL)
+  elseif(DEFINED COMMIT)
+    string(REPLACE "." "\\." VERSION_RE "${VERSION}")
+    if(NOT REFS MATCHES "(\\(|, )tag: v${VERSION_RE}(\\)|, )")
+      set(VERSION "${VERSION}-g${COMMIT}")
+    endif()
+    configure_file("src/version.h.in" "version/version.h")
+    add_custom_target(version ALL)
   else()
     message(STATUS "WARNING: Git was not found!")
     set(VERSION "${VERSION}-unknown")
diff --git a/src/CryptoNoteConfig.h b/src/CryptoNoteConfig.h
index e94fb4ae..44f43864 100644
--- a/src/CryptoNoteConfig.h
+++ b/src/CryptoNoteConfig.h
@@ -150,6 +150,7 @@ namespace CryptoNote
 	const size_t BLOCKS_IDS_SYNCHRONIZING_DEFAULT_COUNT = 10000; // by default, blocks ids count in synchronizing
 	const size_t BLOCKS_SYNCHRONIZING_DEFAULT_COUNT = 128;		 // by default, blocks count in blocks downloading
 	const size_t COMMAND_RPC_GET_BLOCKS_FAST_MAX_COUNT = 1000;
+    const size_t COMMAND_RPC_GET_OBJECTS_MAX_COUNT = 1000;
 
 	const int P2P_DEFAULT_PORT = 15000;
 	const int RPC_DEFAULT_PORT = 16000;
@@ -282,4 +283,4 @@ namespace CryptoNote
 
 } // namespace CryptoNote
 
-#define ALLOW_DEBUG_COMMANDS
\ No newline at end of file
+#define ALLOW_DEBUG_COMMANDS
diff --git a/src/CryptoNoteProtocol/CryptoNoteProtocolHandler.cpp b/src/CryptoNoteProtocol/CryptoNoteProtocolHandler.cpp
index 13753b89..5a163fdf 100644
--- a/src/CryptoNoteProtocol/CryptoNoteProtocolHandler.cpp
+++ b/src/CryptoNoteProtocol/CryptoNoteProtocolHandler.cpp
@@ -395,11 +395,19 @@ int CryptoNoteProtocolHandler::handle_notify_new_transactions(int command, NOTIF
 int CryptoNoteProtocolHandler::handle_request_get_objects(int command, NOTIFY_REQUEST_GET_OBJECTS::request &arg, CryptoNoteConnectionContext &context)
 {
   logger(Logging::TRACE) << context << "NOTIFY_REQUEST_GET_OBJECTS";
+  if(arg.blocks.size() > COMMAND_RPC_GET_OBJECTS_MAX_COUNT || arg.txs.size() > COMMAND_RPC_GET_OBJECTS_MAX_COUNT)
+  {
+    logger(Logging::ERROR) << context << "GET_OBJECTS_MAX_COUNT exceeded blocks: " << arg.blocks.size() << " txes: " << arg.txs.size();
+    context.m_state = CryptoNoteConnectionContext::state_shutdown;
+    return 1;
+  }
+
   NOTIFY_RESPONSE_GET_OBJECTS::request rsp;
   if (!m_core.handle_get_objects(arg, rsp))
   {
     logger(Logging::ERROR) << context << "failed to handle request NOTIFY_REQUEST_GET_OBJECTS, dropping connection";
     context.m_state = CryptoNoteConnectionContext::state_shutdown;
+    return 1;
   }
   logger(Logging::TRACE) << context << "-->>NOTIFY_RESPONSE_GET_OBJECTS: blocks.size()=" << rsp.blocks.size() << ", txs.size()=" << rsp.txs.size()
                          << ", rsp.m_current_blockchain_height=" << rsp.current_blockchain_height << ", missed_ids.size()=" << rsp.missed_ids.size();
diff --git a/src/version.h.in b/src/version.h.in
index 4fad8ff6..b3bbbc6f 100644
--- a/src/version.h.in
+++ b/src/version.h.in
@@ -1,4 +1,4 @@
-#define BUILD_COMMIT_ID "@VERSION@"
-#define PROJECT_VERSION "6.4.9"
-#define PROJECT_VERSION_BUILD_NO "Poseidon"
-#define PROJECT_VERSION_LONG PROJECT_VERSION "." PROJECT_VERSION_BUILD_NO "(" BUILD_COMMIT_ID ")"
+#define BUILD_COMMIT_ID "@COMMIT@"
+#define PROJECT_VERSION "@VERSION@"
+#define PROJECT_VERSION_BUILD_NO "@VERSION_BUILD_NO@"
+#define PROJECT_VERSION_LONG PROJECT_VERSION "." PROJECT_VERSION_BUILD_NO "(" PROJECT_VERSION "-" BUILD_COMMIT_ID ")"