Hi, it seems like Armbian 24 and 25 does not play nice with Jetson Nano B01. I've tried all latest v25 images and some recent v24 images but none of them boot properly. The ethernet LED blinked but no Jetson's IP found on the DHCP Server. This problem might be some error in the netplan.io or networking configuration, but since serial console via micro USB didn't work so I couldn't go in and manually fix it without the UART to USB cable. The last known good version to me is Armbian 23.8.1. So anyone who want to use Armbian on Jetson Nano B01, first try to upgrade the bootloader following the guide of Ben M:
Then flash the Armbian version 23.8.1 provided here (taken from the Armbian community GitHub): https://mirror.yandex.ru/mirrors/armbian/archive/jetson-nano/archive/
I'm using the minimal image and it's working really well so far so good.