It is vital to distinguish between technical capability and legal authority. In many jurisdictions (including the US, UK, and EU), changing an IMEI to circumvent a network blacklist or disguise a stolen device is a criminal offense.
AT+CGSN 867994056789012
Modifying the IMEI is not a standard feature documented in official manuals, as Quectel generally prohibits customers from rewriting these identifiers without an official agreement. However, technical communities have identified several functional methods. 1. Using AT Commands (The AT+EGMR Method) quectel change imei