: Generally very flexible, though they may require more complex initial setup (branding changes).
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
Send AT+GMR to check the firmware version and AT!SecureLevel? (if supported) to check the security status.
Changing or "repairing" an International Mobile Equipment Identity (IMEI) is a complex technical process. The Fibocom L850-GL is a popular M.2 LTE module used in many laptops, particularly Lenovo and Dell models. fibocom l850gl change imei work
Disclaimer: This article is for educational purposes only. The author does not condone or encourage the illegal modification of device identifiers. Always comply with the laws of your country and respect the terms of service of your mobile network operator and device manufacturer.
: Using a serial terminal (like PuTTY or Tera Term) to send specific AT commands to the modem's diagnostic port.
While the allure of turning a "laptop-only" modem into a universal router modem is strong, . : Generally very flexible, though they may require
Many experts suggest selling the L850-GL and purchasing a more "open" module, such as the Sierra Wireless EM7455 or a Quectel EM06/EM12, which allow for easier IMEI modification, often through simple AT commands.
In many cellular modules, IMEI modification is performed via AT commands. For Fibocom L850GL, the standard AT+CGSN command only reads the current IMEI. Writing a new IMEI requires vendor‑specific commands.
Based on community feedback from 4PDA forums , the L850-GL is notoriously difficult, and often impossible, to change the IMEI on successfully. (if supported) to check the security status
: In most jurisdictions (USA, EU, UK, China, etc.), changing the IMEI of a device without manufacturer or carrier authorization is a criminal offense (e.g., US Wireless Telephone Protection Act). This article is for educational and research purposes only .
On specialized forums (4pda, XDA Developers, GSMhosting), users have reported success using:
Modifying the identifier often violates your carrier's contract.
However, community methods and specific tools have been developed for this purpose, primarily within specialized forums and GitHub repositories. Recommended Procedures & Tools Fibocom-L860GL-IMEI-Changer : A community tool available on
