Installing OpenWrt on UniFi nanoHD

@knacky
In the now closed thread Flashing OpenWrt to Ubiquiti UniFi AP (stock flash ver >= 4.0.15) - #7 by knacky it sounds like you found a way? Can you be more specific please?

Does it boil down to:

  1. Use fwupdate.real to downgrade the bootloader
  2. Write an OpenWrt image without reboot using mtd write

?