You can use the serial console to access the board and try to backup your system.
After that, use sdkmaanger to flash your board to latest jp4.6 version. But your data on sdcard will be erased. That is why doing the backup before it.
I am using jetson NX, and there are important code in it, I can’t erase it.
Now, the system can’t start up, how to backup it in this condition? does this method work?
yes,I am not proficient in Linux
I can’t interact with console, it stacked like the pic shows
can serial console method keep my code? it is very important!