Serial number contains letter after firmware flash

Hello, can anyone help me?
I have a RUTX11 that the Serial Number was appearing as zeros (0000000000).
After clean flash the latest Firmware (07.04.5) the last digit of the serial number instead of 5 is u.
Any ideas??
Thank you in advance.


Indeed, this sounds like a strange issue. It could indicate a Flash memory failure. Perhaps you’ve experienced any issues with the configuration not being saved?
I would also recommend completely re-flashing the device using this procedure: RUTXxx Firmware via The Bootloader Menu - Teltonika Networks Wiki

Best regards,

Yes already tried it. No affect.

Thank you for the information.
In this case, I’d recommend returning the device for warranty repair, as it is not possible to modify the serial number of the device.

Best regards,

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