Unlike some generic or older MediaTek-based modems that accept the common command to rewrite an IMEI Fibocom L850-GL features a more secured Intel chipset architecture. Standard AT Commands Do Not Work:
Modifying the IMEI involves sending to the modem's serial interface. 1. Preparation & Requirements Before attempting any modification, ensure you have:
If your L850-GL is not working, you may not need an IMEI change. Often, the issue is a "Power State" or "PCIe vs USB" mode conflict. Ensure you have the latest from your laptop manufacturer's support page to resolve connection drops or "No Service" errors. If you'd like to troubleshoot further, let me know: What is the laptop model you are using? What error message are you seeing in the cellular settings? fibocom l850-gl change imei
The Fibocom L850-GL is an industry-leading LTE Cat 9 high-speed wireless communication module, developed on the Intel XMM 7360 platform with an M.2 form factor. It supports downlink speeds of up to 450 Mbps and uplink speeds of up to 50 Mbps, making it a popular choice for 4G connectivity in laptops (especially Lenovo ThinkPad models), tablets, gateways, and industrial IoT devices.
Before you begin, you need the right environment to talk to the modem: Unlike some generic or older MediaTek-based modems that
: Send AT+CGSN and press Enter. This command returns the current IMEI of the module.
Incorrectly flashing or modifying firmware can permanently disable the modem. Some users report that after certain firmware updates, the IMEI is lost and cannot be recovered. Original IMEI: If you'd like to troubleshoot further, let me
Standard consumer firmware prevents write access to the IMEI slot to comply with global telecommunications regulations.
After successful firmware flashing: