Gave it a shot with a N305 on an Odroid H4 Ultra on the 1.06 bios following the steps from that and the github repo it’s pulling from:
The 6.8 steps do work on this device, but one will have to pin that specific kernel version (6.8.8-2) as Proxmox is up to at least 6.8.12 after the post-setup update install.