Model :

Hardware Version :

Firmware Version :

ISP :

Hello,
I have problem with my TP-Link MR3420 v2 with tp-link official firmware, After over a year of no problem using, it become a brick...
When I turn router on once flash all leds at once and then only power led flash all the time...
I tryed hard reset it by holding reset button but nothing happen, not even single led flash...
Tryed to enter recovery mode by holding reset button before turn on and release few seconds after... nothing changed only power led flash...

Any ideas how to fix it?