Ensure you are using the latest firmware from your laptop manufacturer (e.g., Lenovo or HP), as these modules often have compatibility issues with generic Windows drivers.
(typically used for Quectel or MediaTek) may not work or can even "brick" the device.
: Getting the modem to work on data plans that are restricted to specific "approved" devices (like tablets or phones).
Yes — but with significant caveats.
Are you trying to bypass a or fix a device that isn't being detected by your laptop?
The IMEI is stored in a specific sector of the NVRAM. Expert users always back up the "Calibration Data." If you lose this data without a backup, the modem will never connect to a cell tower again. 3. Finding the IMEI String
Some versions require you to first disable write protection with AT+EGMR=0,1 before setting the new number. 2. Specialized Scripting (OpenWRT) fibocom l850gl change imei work
If you have a module with SecureLevel: 0 , users on communities like 4PDA have reported success using the following sequence in a serial terminal:
: The Fibocom L850-GL is a soldered or M.2 module found in many laptops (ThinkPad, Dell XPS, Surface, etc.). Changing IMEI usually requires low-level AT commands or proprietary tools.
Changing the IMEI on a (an Intel-based LTE M.2 module) is generally not possible through standard software or simple AT commands because it is hardware-locked by the manufacturer to prevent tampering . Ensure you are using the latest firmware from
modem are generally reported as [9]. While many other modems (like some Sierra Wireless or Quectel models) support IMEI modification via simple AT commands, the
: You must be able to send commands to the modem's serial port (e.g., /dev/ttyACM0 on Linux or a COM port on Windows).
According to 4PDA community findings, if your L850-GL is not a SecureLevel: 0 unit, attempts to force these commands can lead to a "bricked" modem, rendering it completely unusable. Alternatives to Changing IMEI on L850-GL Yes — but with significant caveats