RUT955 unable to connect once upgrade firmware

Hello, I have 10 units of Teltonika RUT955. However, recently I have 2 unit of RUT955 that have connection issue.

When update the firmware of RUT955 to the latest firmware (rut9_R., the teltonika become unable to get connection. One unit having blinking all 5 signal strength LEDS and one unit is blinking green and red.

Thus, I tried to downgrade the firmware back to RUT9xx_R_00.06.09.5, and both works fine with this firmware. Once it is working fine, I tries again to upgrade the firmware, the results are back to the same issue, which is connection issue.

May I know what is the problem with this 2 unit of Teltonika and how can I proceed if I want both unit to be upgraded to the latest firmware?

Thanks for you help.


I would offer to upgrade to most recent firmware RUT9_R_00.07.06.6 instead of RUT9_R. This should solve the issue you are having.

Best regards,


Hi Marijus,

I have tried to upgrade the firmware to RUT9_R_00.07.06.6 as you suggested, however, the results still the same. Both unit still unable to work in the new firmware and need to downgrade it back for it get connection or working.


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