Hello team and community, Since updating my RUTC router firmware and modem firmware, the internal modem has become completely unstable and can no longer establish a mobile connection. Device: RUTC Router Firmware: Initially upgraded to RUTC_R_00.07.20.3 (stable), later also tried RUTC_R_00.07.21.…

Greetings, For troubleshooting purposes, we will require more sensitive information from your end, such as the troubleshoot file, which may contain passwords, public IP addresses, serial numbers, and such. To avoid leaking this information, we have sent you a form to fill out, which you will receiv…

Hello tebeva, have you got any new information? We ran into the same issue with the RG520NEBDCR03A05M4G firmware on our RUTX50.

Maybe this will help [image] RUTX50 internal modem unstable after RG520 modem firmware update – SIM failure, gsmctl N/A, no registration Issue Hello everyone, and thanks a lot for the tips on fixing the problem. Sorry, but all these workarounds are, in s…

RUTC50 — no mobile internet connection after firmware + modem update: PIN state flipping

Networking Solutions Issue

Leigh April 6, 2026, 1:51am 5

Maybe this will help

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