If the first command fails, it means your modem might be a different hardware revision. The tool provides a second, alternate key file. Run the same command but use AltSprk2048dev.key instead: sec_provision.exe -c COM3 -i1 356938035643809 -k AltSprk2048dev.key

The Fibocom L850GL is a popular cellular module used in a wide range of applications, including IoT devices, industrial routers, and mobile broadband solutions. One of the key features of this module is its ability to support multiple frequency bands and networks, making it a versatile solution for global deployments. However, in some cases, users may need to change the IMEI (International Mobile Equipment Identity) of the Fibocom L850GL module. This article provides a detailed guide on how to change the IMEI of a Fibocom L850GL module, including the reasons for doing so, the methods involved, and the precautions to take.

Quick note on legality and risk

: Managed primarily via AT commands or proprietary Intel/Fibocom drivers. Methods for Modification

15 Sept 2022 — How to use. Execute. xmm75xx-info. With custom interval. xmm75xx-info -i 3. With custom device port. xmm75xx-info -d /dev/ttyACM2. MiFi - changing IMEI - Router - GL.iNet Official Forum

Remember to replace the X's with your 15-digit target IMEI. for the change to be successful and persistent.

What prompted it

There are several reasons why a user may need to change the IMEI of a Fibocom L850GL module:

If you tell me more about your specific setup, I can provide more targeted details: Are you using the module in a or a USB adapter ?

Changing the IMEI on a Fibocom L850-GL is generally performed using specific through a terminal or specialized software tools, though it is important to note that this is illegal in many jurisdictions and can risk "bricking" the modem. Common Methods xmm7360/xmm7360-usb-modeswitch: Tools for the ... - GitHub

On some modems, after sending the command, you may need to execute a save command like AT+CFUN=15 to reboot the modem's internal systems and apply the change.

Ensure the modem is connected in "Diagnostics" mode (often appears as COM port). 4. How to Change/Repair the IMEI via AT Commands