: Restart the module with AT+CFUN=1,1 and check again with AT+CGSN . Troubleshooting common errors:
: Send AT+CGSN or AT+EGMR=0,7 to verify the current number. Update IMEI : Send AT+EGMR=1,7,"YOUR_NEW_IMEI" . quectel ec25 change imei
The most direct method is using the AT+EGMR command via a serial terminal (like PuTTY or MobaXterm ). : Restart the module with AT+CFUN=1,1 and check