Hiya I wonder if you can help me. I have an RUTX50 that is coming up with Mobile 5GMM Reject cause: N1 mode not allowed. This is with firmware RUTX_R_00.07.23.7. But works perfectly fine with RUTX 00.07.17.4. Does anyone have any suggestions? I have an EE sim installed in the UK. So with the lat…

I am using a private 5G SIM card (5G SA), and when I search for available networks, I can see the private 5G network; however, it never associates or registers with it. I am using the same firmware version, RUTX_R_00.07.23.7.

Unfortunately I can only connected to a 4G band, if I restart the connection it will try and connect to the 5G network but just disconnects with the above error message. Never had any problems until recently. I have a 5G router that can’t connect to 5G network……. I noticed a post back in March that…

I just tried using RUTX 00.07.17.4, but it didn’t work in my case either.

[image] joji1990: RUTX 00.07.17.4 When I downgraded to RUTX 00.07.17.4 it started working, I had the 5G bands showing and had the speeds of 80-100mb. I thought that was a temporary fix, however it went off for a few seconds after half hour, then no 5G once again. I’ve had this problem for awh…

[image] RUTX50 (RG501Q-EU) – Unable to register (stuck in C5GREG 0,2) on Strict Private 5G SA Nokia Core (Release 15) / Band 77 Issue Hi Teltonika Support Team, I am experiencing an issue where our RUTX50 (equipped with the Quectel RG501Q modem) is comple…

Very interesting, wow your team has done a deep dive into this issue. Let’s hope we get a fix for this current 5G issue.

Hi Teltonika Support Team, I need you to please look into my issue, my RUTX50 will not connect to the 5G network. I got a message coming up with Mobile 5GMM Reject cause: N1 mode not allowed. I have the latest modem firmware RG501QEUAAR12A11M4G. The system firmware is RUTX_R_00.07.24.1. It has…

Good day, Please post your questions regarding RUTx devices in separate Networks group forum. Thank you for your understanding. Here is the link: Latest Teltonika Networks topics - Teltonika Community Best Regards, Imran S.

Mobile 5GMM reject cause: N1 mode not allowed

Telematics Issue

joji1990 July 20, 2026, 4:33am 6

This is the one, I logged and waiting to get a response from tech team.