hello applereng,
it seems there’s connection issue before actually flashing the device,
for example,
*** Checking target board connection ... 1 connections found.
*** Reading ECID ... *** Error: ECID read failed.
Put the target board in RCM mode and retry.
could you please use the command-line to flash the target,
you may go to the installation path for the JetPack release image,
for example, /home/alperen/nvidia/nvidia_sdk/JetPack_4.5.1_Linux_JETSON_AGX_XAVIER/Linux_for_Tegra/
there’s flash.sh script you’re able to perform image flashing manually.
you should still put device to enter forced-recovery mode, and please execute $ sudo ./flash.sh -r jetson-xavier mmcblk0p1 to burn the target,
you may share the results for reference if you still meet with failures.
thanks