I used this simple guide to flash and restore the jetson AGX xavier board.

  • If you are getting the below error, then your jetson board is not running on recovery mode. Board Not Connected

  • Follow this Wiki to set it to recovery mode first - Link
  • Once it is set to this mode, type lsusb and look for NVIDIA in the results. Note, you have to plug-in the USB-C cable to the port next to the LED of the Jetson board as the other one didn’t work.

LSUSB

  • Now open SDK Manager and see that your board is connected.

Board Connected

Helpful to identify the recovery button on Jetson AGX Xavier

Locating recovery button