After i2cset, nano can not boot and the serial port has no print information

After i2cset, nano can not boot and the serial port has no print information. When reflashing the nano with command “sudo ./flash.sh jetson-nano-emmc mmcblk0p1”, the terminal prints “Parsing board information failed.”
We use emmc nano board, without SD card.

hello clevor18,

may I know which I2C you’re programming to cause the issue?
BTW, you must put the board to enter forced-recovery mode for image flashing.
please check developer guide, To determine whether the developer kit is in Force Recovery mode.
thanks