GL-MT2500 stopped working

It stopped working. I don't really know why, i didn't do anything manually since last time was working.
I can't connect, it doesn't respond at all, i checked it with wireshark.
It seems configuration doesnt restart if i keep pressed the reset button

Then I tried to start uboot, and this is "working", but when I flash a firmware from the website. It returns success. I can see the message on the wireshark. It tries to restart, but it doesn't. Goes back to last state.

I tried this multiple times, even installing older firmwares, but nothing.

Is there something else I can try?

Thank you

pls contact cs at gl-inet.com and cite this post. @blogan

It seems defective.