— Never experiment on a primary production module.

So when people ask “fibocom l850gl change imei work,” the answer depends entirely on your firmware version and module variant (e.g., L850-GL vs L860-GL).

: If the modem is in PCIe mode (common in ThinkPads), it may need to be switched to USB mode using tools like xmm7360-usb-modeswitch to expose the AT command ports.

Improperly flashing or sending incorrect AT commands to the Intel XMM7360 chipset often leads to permanent hardware failure.