: Unplug the laptop battery or remove the M.2 module from the slot for 60 seconds to clear the volatile cache.
Modern network operators (MNOs) use sophisticated tools to detect altered or cloned IMEIs, which can lead to your device being blacklisted entirely.
For troubleshooting, it is always recommended to use the official Fibocom support resources or the MikroTik forum for community-driven support.
The era of freely rewriting modem serial numbers ended with 3G. Modern modules like the L850-GL are security-hardened for good reason—to prevent fraud and theft. Respect that boundary, and you’ll save yourself from a bricked laptop and a potential legal headache.
While primarily associated with MediaTek-based modules, some Intel-based modules may accept this command. In some platforms that cannot use EGMR, GTSN is used as the alternative. fibocom l850-gl change imei
The Fibocom L850-GL is an LTE Cat 9 M.2 module commonly found in:
Each approach is detailed below.
First, connect your Fibocom L850-GL module to your computer using a suitable interface. The module typically uses a USB-to-serial adapter for configuration.
Fibocom manufactures both generic (retail) modules and OEM-specific variants. A Lenovo-branded L850-GL contains a specific Subsystem ID (SSID) in its firmware that matches the whitelist in a ThinkPad BIOS. Flashing generic firmware onto an OEM module—or vice versa—can cause the host laptop to throw an "Unauthorized Wireless Card" error at boot. Firmware Flashing and Intel Flash Tools : Unplug the laptop battery or remove the M
Users seek to change a modem's IMEI for several reasons:
: The command AT+EGMR=1,7,"[YOUR_NEW_IMEI]" is frequently cited by advanced users to permanently "repair" or change the IMEI on compatible cellular hardware. Accessing the Command Interface
Look under for the "Intel XMM7360 Modem" or "Fibocom AT Port."
Proper driver installation on Windows or Linux to allow USB serial interface access. The era of freely rewriting modem serial numbers
Enter the IMEI at swappa.com/esn or imei.info . If reported lost/stolen, no amount of hacking will make it work long-term.
After thousands of words on tools, techniques, and troubleshooting, the most honest advice is this:
A successful operation will display:
Given the risks, consider these safer alternatives to solve your underlying problem.