mainer
14
Just to add my experience with an AR750S loading OpenWrt 21.02.
I found that I had to use Uboot and load the “nor” .bin version and NOT keeping settings. I could then connect, log in (no password) and use the System > Backup / Flash Firmware menu to load the “nor-nand” version successfully. Loading the “nor-nand” with Uboot does not actually brick the device as you can simply go back and reload the “nor” version.