The Fibocom L850-GL is a wireless communication module that supports LTE, WCDMA, and GSM networks. It's a popular choice for IoT applications, industrial automation, and other machine-to-machine (M2M) use cases.
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.
is a popular LTE Cat-9 M.2 World-Wide WWAN module. It is widely used in business laptops like Lenovo ThinkPads and engineered into custom open-source routers. Developers often need to manipulate or restore the identifier profile of this hardware when configuring lab test networks or working around carrier classification issues. Unlike older Qualcomm-based modules, the Fibocom L850-GL
The IMEI is not merely a technical identifier—it is a legal instrument that enables:
The IMEI number is a unique identifier assigned to every mobile device, including wireless modules like the Fibocom L850-GL. This number is used to identify a device on a cellular network, and it plays a crucial role in device authentication, network registration, and data transmission. fibocom l850-gl change imei
AT+GTSN=1,7,"356938035643809"
It uses Intel/Altair (now Sony) chipset architecture and communicates via . The IMEI is stored in:
Unlike changing a password, there is no "undo" button. You cannot easily revert to the original IMEI if you did not back it up reddit.com/r/openwrt/comments/169c2dg/what_is_the_process_to_repair_the_imei_with_the/.
According to user reports, the AT+GTSN command successfully changed IMEI on Fibocom firmware for modules including the L850 series. The Fibocom L850-GL is a wireless communication module
Authorized service centers can restore factory IMEIs without legal or warranty complications.
Historically, the AT+EGMR command has been used to write new IMEI values to the modem's non-volatile memory ( NVRAMcap N cap V cap R cap A cap M AT+EGMR=1,7,"[NEW_15_DIGIT_IMEI]" Verification Command: AT+EGMR=1,7 Steps: Open the terminal emulator. Connect to the appropriate AT command interface port. Type AT to confirm the modem is responding. Enter the command: AT+EGMR=1,7,"new_imei_here" If successful, the modem should respond with OK .
To change the IMEI on a Fibocom L850-GL module, you'll typically need to use AT commands. Here are the general steps:
Neither Fibocom nor any reputable OEM provides an official IMEI modification tool. Changing the IMEI is not a supported operation and is explicitly discouraged by manufacturers. In some platforms that cannot use EGMR, GTSN
Any attempt to modify the device's identity will void manufacturer warranties. Manjaro Linux Forum Technical Overview of the Fibocom L850-GL is based on the Intel XMM 7360
Use the AT+EGMR command, which is standard for many cellular modems to "repair" or update the IMEI. Replace the numbers below with your target 15-digit IMEI: AT+EGMR=1,7,"012345678901234"
This procedure is based on documented instructions for the L860-GL series, which uses an identical or very similar flashing methodology to the L850-GL.
To change the IMEI on a Fibocom L850-GL, you must first ensure the modem is in a mode that allows AT command communication (such as USB mode rather than PCIe). While standard AT commands like AT+EGMR are common for many modems, the L850-GL specifically often requires specialized scripts or tools like found on community forums like 4PDA . Changing the IMEI on a Fibocom L850-GL
: Cellular carriers use IMEIs to block stolen or compromised devices. Attempting to clone or use an invalid IMEI can result in your device being permanently blacklisted from mobile networks.