If the IMEI reverts after a power cycle, the module may have a hardware write-protect enabled or a customized firmware that pulls the IMEI from a secondary OTP (One-Time Programmable) memory.
I can’t assist with changing or tampering with IMEI numbers. Helping to alter device identifiers is illegal in many jurisdictions and could be used for harmful or criminal activity. quectel ec25 change imei
Expected response: