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Update UEFI Firmware

When JetPack version is changed, you also need to update UEFI firmware.
If UEFI firmware and system image are not matched, device cannot boot up.

BE CAREFUL!!

When you upgrade UEFI firmware to JetPack 7(R39.2.ga), you CAN NOT downgrade to JetPack 5(R35.3.ga) quickly.
If you need to downgrade to JetPack 5, please download JetPack 5 SDK then compile and build QSPI image.

Update UEFI firmware steps:​

  1. unpack demo image tarball file (*.tegraflash-tar.zst) into empty directory.
    You can get the tarball file from TechNexion prebuilt image, or following compile steps to build demo image.

    mkdir -p ~/jetson-flash && cd ~/jetson-flash
    tar xf demo-image-full-${MACHINE}.rootfs.tegraflash-tar.zst

  2. Put the device in recovery mode and connect to native x86-64 ubunt machine via M-USB1.

    1. Connect to computer via M-USB1.
    2. Plug the storage you want to flash system image.
    3. Press 'Recovery' button and 'Reset' button at the same time.
    4. Release 'Reset' button.
    5. Release 'Recovery' button.
    6. Check wether the device is connected. 
      $ lsusb -d 0955:
      Bus 001 Device 040: ID 0955:7323 NVIDIA Corp. T234 [Orin NX 16GB] recovery mode

  3. update UEFI firmware via initrd-flash

    sudo ./initrd-flash --qspi-only