In many jurisdictions, tampering with an IMEI is a criminal offense. xmm7360/xmm7360-usb-modeswitch: Tools for the ... - GitHub
, many standard diagnostic tools cannot "see" the modem unless you use a specific M.2-to-USB adapter that supports PCIe bridge protocols. Firmware Versioning fibocom l850gl change imei work
If you still wish to proceed (e.g., to restore a zeroed IMEI), gather: In many jurisdictions, tampering with an IMEI is
Send AT+CGSN? or AT+CGMI to check if the new number is registered. In many jurisdictions
A factory-unlocked (not from Dell/Lenovo) often works worldwide. Price: ~$50 on AliExpress.