RV50 bricked, can't reset

Hi, I change configuration wirelessly on a RV50. Just open some ports, and adjust some parameters in the serial tab, I apply before changing tabs but reboot only once all changes have been made.
Once rebooted, I couldn’t access to the modem, by chance I was just beside it and I saw that only the power led was on. I try to reset, unplug it, hard reset (long press) but nothing work. I tried to plug it in my computer with ethernet cable but to no avail, the modem doesn’t even give an IP address. It looked like it’s completely bricked.

Is there something else I can try before returning it to the manufacturer?

Thank you

Mathieu

I have the same problem. I was trying to set up static IP and unit lost communication. Factory reset doesn’t work so unable to connect in any manner. Suggestions?