TTOG not responding to anything

I bought a TTOG, the EU868 variant and it was working fine for a year until one month ago were its suddenly stopped working. No web GUI no SSH and not responding to Ping request tried using the Poe adaptor of my other TTOG but no luck I can see led blinking on the port of the switch and through the SIM card cap. It was indoor so its not a lighting strike. I was wondering if anybody knows of a way to hardware reset the firmware, or another way to de-bricked it.

Best regards