Trouble Flashing AREDN to Ubiquiti LiteAP 5AC (TFTP Mode Uncertain)

Hi all,

I’m trying to load AREDN onto a Ubiquiti LiteAP 5AC and haven’t had any success. The device only has two LEDs (power and signal), and the documentation doesn’t describe a clear TFTP recovery sequence.

I’ve been powering up while holding the reset button for ~30 seconds. At that point the power LED begins slow-blinking while the signal LED stays solid. I’ve been assuming this is TFTP mode, but I’m not certain.

When I attempt to TFTP the ubnt_lap-120 factory image, the device briefly flashes both LEDs as if it received the file, then immediately returns to the same blinking/solid LED state—as if the firmware was rejected for the wrong hardware ID.

Before I spend more time guessing:
Is this LED pattern actually the correct TFTP mode for the LiteAP 5AC, and is the LAP-120 image the right one for this device?
Any guidance on the proper procedure or the correct image would be greatly appreciated.

Thanks in advance.

Fritz NM5XD