pages: Add Jetson Orin UEFI instructions

Change-type: patch
Signed-off-by: Alexandru Costache <alexandru@balena.io>

pages/learn/develop/jetson-orin.md

@@ -0,0 +1,51 @@
+---
+title: Jetson Orin
+---
+
+# Jetson Orin
+
+## How to check your Jetson Orin's UEFI firmware version
+
+You can check which UEFI firmware version your Orin device is running either by connecting to your device's debug UART interface, or by attaching a display to the Orin's video port.
+
+The debug UART interface can be accessed on the Orin Nano and Orin NX devices by connecting a USB to RS232 converter to the TX, RX and GND pins on the carrier board, which are located underneath the Orin module.
+
+On AGX Orin Devkits, the debug UART interface is available through the micro-USB interface, when the device is powered on. On Linux machines, the serial connection can be accessed using `minicom -D /dev/ttyACM0`.
+
+If you are using the UART interface, the UEFI firmware version will be printed in the boot sequence logs:
+
+![Orin UEFI uart logs](/img/jetson-orin/jetson_orin_uefi_version_uart_logs.webp)
+
+Alternatively, if booting is stopped in the UEFI menu by pressing `Esc`, the firmware version will be printed in the top-left corner:
+
+![Orin UEFI uart menu](/img/jetson-orin/jetson_orin_uart_uefi_menu.webp)
+
+If your Orin is connected to a monitor, the UEFI firmware version will be displayed at the top of the screen:
+
+![Orin UEFI display menu](/img/jetson-orin/jetson_orin_interrupt_booting_uefi.webp)
+
+If the firmware version is older or newer than v36.3, please re-flash its firmware by following the corresponding guide below:
+
+[Firmware update for Orin Nano SD-CARD](https://developer.nvidia.com/embedded/learn/get-started-jetson-orin-nano-devkit#firmware)
+[Flashing Jetpack 6 using SDK Manager](https://developer.ridgerun.com/wiki/index.php/JetPack_6_Migration_and_Developer_Guide/Installing_JetPack_6/Flashing_with_SDK_Manager)
+
+## Booting balenaOS flasher images from a USB key
+
+If your device does not boot the balenaOS flasher image from an attached USB key automatically, please follow these steps:
+
+1) Attach a USB keyboard and a monitor to the device
+2) Power on the device and press 'Esc' when prompted by the UEFI firmware, or 'F11' to enter the Boot Manager Menu directly
+![Orin UEFI display menu](/img/jetson-orin/jetson_orin_interrupt_booting_uefi.webp)
+![Orin UEFI boot manager](/img/jetson-orin/jetson_orin_uefi_boot_manager.webp)
+3) Select the attached USB key as boot media:
+![Orin UEFI boot manager](/img/jetson-orin/jetson_orin_uefi_usb_key.webp)
+4) Your device will boot, provision the internal storage, and then power off. Once the device shut down, you can remove the USB key.
+
+## Post-provisioning UEFI firmware update
+
+Once your device has been provisioned and powered back-on, it will attempt to update the UEFI firmware automatically.
+The status of the UEFI firmware update process is depicted by a progress bar on the debug UART interface, as well on the display, if connected:
+
+![Orin UEFI firmware update progress](/img/jetson-orin/jetson_orin_uefi_firmware_update.webp)
+
+Please do not interrupt this process by reseting or cutting power from the device.