Groove A-2Hn after update

The light comes on it beeps then light shuts off.

Does anyone know how I can get it working again?

How do I revert back to the previous version? Would that even help?

If all the LEDs turn off, it could indicate a power problem. Have you tried another power adapter?

Its Poe, and other routers work fine from the cable.

a software upgrade can’t cause the unit not to turn on. it might be a hardware related issue. I suggest contacting the seller