Open Windows Device Manager, expand Ports (COM & LPT) , and locate the Fibocom AT Port or Intel Mobile Communications serial port. Note the COM port number (e.g., COM5 ).
Modifying the IMEI on a Fibocom L850-GL is significantly more difficult than on older generation modules due to the security protocols of the Intel XMM 7360 platform and its native PCIe architecture. While firmware engineers can interface with the device using specialized AT diagnostic ports and flashing utilities, retail modules are tightly locked to maintain regulatory compliance and network security.
Before you do anything else, confirm your L850-GL’s real IMEI:
The firmware on Intel-based modems is designed with security protocols to prevent unauthorized access to sensitive memory regions. Attempting to bypass these protections typically requires low-level access to the modem's operating environment. Any error during this process can lead to "bricking," where the device becomes permanently non-functional. Network Security and Detection
The Fibocom L850-GL is an LTE Cat-9 M.2 cellular module widely used in laptops from manufacturers like Lenovo, HP, and Dell. Unlike older modules built on Qualcomm chipsets, the L850-GL is powered by the chipset.
How to Change the IMEI on a Fibocom L850-GL LTE Module: A Comprehensive Technical Guide
AT+CGSN // Requests the product serial number / IMEI AT+EGMR=0,7 // Intel-specific command to read the primary IMEI Use code with caution.
