RUTX09 - SIM state changed to not inserted (internal modem)

Networking Solutions Issue
1

Hi,

After having good experience with the RUTM09, we bought another Teltonika router model RUTX09.

During ongoing testing in the field, it turns out that this device for some reason looses the SIM multiple times a day, as such dropping the Tailscale connection and remote access. Which is rather annoying because that’s why we installed the router.

When running, all signal levels are appropriate and the connection is good. It is therefore strange that the SIM is suddenly lost.

What we also noticed is that after a soft reboot (it happened after upgrading the firmware today, but also when I do a reboot via the webGUI), the modem does not seem to function (it says ‘Interface can’t be edited because modem is blocked or disabled’). A power cycle fixes this. EDIT: actually sometimes when we did the power cycle it also did not come up. But today it worked to get the modem to work after a soft reboot.

Router details:

  • Device name

    RUTX09

  • Product code

    RUTX0900XXXX

  • Bootloader version

    2.27.0

  • Serial number

    6000786376

  • Hardware revision

    1010

  • Batch number

    0052

System

  • Firmware version

    RUTX_R_00.07.24.5

  • Kernel version

    6.6.126

  • Local device time

    2026-10-02 19:40:11

  • Uptime

    0h 24m 2s

  • Load average

    0.01, 0.17, 0.23

Internal modem

  • Model

    EG06-E

  • IMEI

    861330059516582

  • FW version

    EG06ELAR04A30M4G

  • Temperature

    49°C

The problem appeared with using two different SIM cards.

The SIM was cleaned today and reseated. Afterwards, it worked stable for multiple hours, before going down again. In the meanwhile it happened at least four times again.

We can share logs etc if necessary.

Can we maybe get the previous firmware, if more stable?

3

Hi,

I was hoping to have received an answer by now.

In any case, some new info:

  • We configured a system reboot when pinging fails. Although this saved the connection for a day or so, at a certain point the modem did not restart and the device restarted every 15 minutes for two days until we got access to it and did a cold restart.
  • Afterwards, we turned off Volte, and auto APN. Also, instead of rebooting, we configured restarting the modem. Initially the connection was very stable for around 6-7 hours, and then the connection was lost and never came back. (likely a modem restart is triggered every 10 minutes, but this does not help. A cold reboot seems necessary).

All by all, it seems pretty clear there is an issue with the modem. Either the firmware or the hardware itself.

I would appreciate quick assistance.

Thanks.

4

Greetings,

Sorry for the late response.

Regarding the mobile issue, we would like to continue our communication with you privately.

We have sent you a form to complete, which you should receive in the email inbox associated with your forum account.

When filling out the form, please enter the ID of this thread 21429, in the Ticket ID field.

Once you have submitted the form, please let me know, and we will contact you privately to assist you further.

Kind regards,
T.

5

Hi,

Well appreciated.

I opened the ticket yesterday evening.

When can I expect feedback please?

6

Hello,

Thank you for completing the form! I have reached out to you by email. When you have time, please check your inbox.

Kind regards,
T.

7

Hi,

I sent the items.

Would appreciate some feedback quickly.

8

Hello,

Thank you for the update. I have sent you an email with the latest information on our progress. Please check your inbox when you have a moment.

Kind regards,
T.