Installing OpenWrt on WatchGuard AP320

I'm having trouble installing OpenWrt on an WG AP320. Can't log in booting normally. Tried these instructions OpenWrt support for Watchguard AP320 (aka Mojo C-75) - #2 by frollic and only get to the ath> prompt and Wrt will not install from there.

And you've done;a=commitdiff;h=0d96d36841e817f368e86d4af725570d757cb0ca ?

Well this morning i can't connect to it at all. Any idea how to unbrick it?

If it's dead, SPI programmer.