Sdkmanager -> flash the board with SDK and driver through usb (similar to sdcard but different method) -> If you still hit same error, you have to dump the log from serial too.
Flashing the board through usb is a method that supports for every jetson platform since tk1.
SDcard is a new method that starts from jetson nano and NX.
Hello, I had a similar problem. I discovered that I was using the 4GB Jetson Nano image for the SD card. You have to use the correct image for the 2GB Jetson Nano (both links are on the Nvidia developer site)