: Send AT+CGSN or AT+EGMR=0,7 to verify the current number. Update IMEI : Send AT+EGMR=1,7,"YOUR_NEW_IMEI" .
: This often occurs if the modem is actively managed by a service. On Linux systems, stop the ModemManager service before sending commands. quectel ec25 change imei
: Modification may fail if the module is connected via certain WAN interfaces. Disconnect external ethernet or network cables during the process. 2. Fastboot Method (For Advanced Recovery) : Send AT+CGSN or AT+EGMR=0,7 to verify the current number