Just curious, does any part of that name correspond to the ESN/MAC of the AP?
The KB article at http://community.cambiumnetworks.com/t5/ePMP-Troubleshooting/Recovery-of-flash-corrupted-ePMP-devices-caused-due-to-power/m-p/54712#U54712 talks about TFTP recovery from corrupted firmware, but suggests the firmware.bin file is what it would be looking for, so Cambium will probably need to chime in as to whether this is related scenario or something else.
j