The Fibocom L850-GL is an M.2 form factor LTE Cat 16 module used in many laptops (Dell, Lenovo, HP). It communicates via USB (CDC/NCM) and exposes AT command interfaces. In theory, IMEI programming would involve:
To understand the complexity of changing an IMEI, one must first understand what the IMEI is. The IMEI is a unique 15-digit number used to identify a device on a mobile network. It is not a SIM card identifier; it is a identifier. fibocom l850-gl change imei