Instead of changing the IMEI, sell the Fibocom L850-GL and buy a carrier-approved module (e.g., Sierra Wireless EM7455) that allows legitimate IMEI repair via standard AT commands. Or use a USB tether from your phone – it’s far less risky.
The Fibocom L850-GL is an LTE wireless communication module designed in the M.2 form factor. It supports global LTE bands and typically offers downlink speeds of up to 150 Mbps and uplink speeds of 50 Mbps. It is essentially the hardware that allows a laptop to have a built-in 4G SIM card slot, functioning similarly to the modem inside a smartphone but operating over the USB interface of the computer. fibocom l850-gl change imei
Unlike older Sierra Wireless or Huawei modules that have a simple AT+EGMR command, Intel-based Fibocom modules are notoriously locked down. The L850-GL has and firmware signature checking . You cannot just type a command and change the IMEI. Instead of changing the IMEI, sell the Fibocom
The IMEI is stored in a protected NVRAM (Non-Volatile Random Access Memory) region. On most modules, this is writable via a "magic" diagnostic mode. On the L850-GL, Intel implemented a for the IMEI on newer firmware revisions. Once set at the factory, it cannot be changed. It supports global LTE bands and typically offers
. While some modems allow IMEI "repair" via standard AT commands, the