7.6.3 update bricked my Airport Extreme

It is a 2 gen n device, after the update (5.6.1 from snow leopard) the front light no longer comes on, it is not discoverd by airport utility (not on snow leopard even through ethernet, and not with the lastest in mountain lion, that is a MBA so no ethernet) the ethernet ports are blinking in the back. none of the resets work (factory, hard etc), help?