jetson nano stuck in recovery mode after flash dtb

I recently purchased an A02 and B01 development board, and they both booted normally for the first time, but after I flashed dtb with the following command, they were stuck in recovery mode and could not boot:

sudo reboot --force forced-recovery
sudo ./ -k DTB jetson-nano-qspi-sd mmcblk0p1

Making a new sd card image does not work either.

Even if I don’t insert the sd card, I can still see the ID 0955: 7f21 NVidia Corp through lsusb.

What should I do to make it work?


Hi t_msg,

Looks your Jetson-Nano device is in the recovery mode.
Please make sure you are enable J40 pins 3 and 4.
You can reference detail User Guide.

@carolyuu, Thanks for the response.

I can be sure that nothing is on J40 pins 3 and 4

Hi t_msg,

If you can see the “ID 0955: 7f21 NVidia Corp” device via ‘lsusb’ command.
Please try to flash device by manually again.

$ sudo ./flash jetson-nano-qspi-sd mmcblk0p1

Awesome, it works now, thank you very much for your support.

Can you tell me what is wrong with my operation that caused the problem? And why re-flashing a new SD card does not solve the problem?