We have removed some of the comments in this comment section that discussed a procedure for updating the modem. This procedure is meant for internal use or special cases where the standard method is not available. However, this procedure is quite complex and risky, as any interruption in power or connection could cause irreversible damage to the modem. Therefore, we have decided to delete the information related to this procedure.
The recommended way to update the modem is to use the DFOTA service by navigating to System → Firmware. This is much safer and simpler than the alternative procedure.
If you have any further concerns, please contact us by filling out the Contact Us form here: Teltonika Networks - LTE Routers, Gateways & Modems for IoT
We will not answer any more questions about this topic on the forum. We apologize for any inconvenience caused.