Debrick of MT300 N-V2

Hello everybody, I was trying to debrick the above mentioned router with Uboot ( Debrick via Uboot - GL.iNet Router Docs 3). Connection to the PC is established but I am not able to connect to uboot ( Tried it on Debian as well as on Windows. Any other ideas how to debrick this router? Thanks for some hints

  • For GL-MT300N, GL-MT300A, the LED flashes 3 times.

Did this happen?
Can you ping

What IP did you give your PC?

PC IP is and I am not able to ping but network show connected