Quectel Change - Imei

AT+EGMR=1,7,"NEW_IMEI" AT+NVM=2 AT+REBOOT That’s it. No locks. No security. (This is why 2G is being sunset.) | Error | Solution | | :--- | :--- | | ERROR | Unlock with AT+QPRTPARA=1 first. Or module is SIMlocked. | | CME ERROR: 13 | SIM failure – Insert a valid SIM card. Some modules require a SIM to write IMEI. | | CME ERROR: 3 | Operation not allowed. You need the DIAG port method (Part 5). | | +CME ERROR: 100 | Unknown command. Use AT+CGMR to check firmware; update to latest OEM version. | Part 9: Automation – Scripting IMEI Change for Mass Production If you are an OEM programming 10,000 modules, use Python with pyserial .

AT+EGMR=1,7,"867994056789012" OK Use AT+EGMR=1,10 for SIM 1 and AT+EGMR=1,11 for SIM 2. Step 5: Verify the Change Hard reset the module: quectel change imei

AT OK AT+CGSN 123456789012345 OK Step 3: Unlock IMEI Modification (Security Check) Most recent Quectel firmware requires unlocking via AT+QPRTPARA . This is mandatory for EG25/EC25 firmware after 2020. AT+EGMR=1,7,"NEW_IMEI" AT+NVM=2 AT+REBOOT That’s it

AT+QPRTPARA=1 OK Note: Some modules require AT+QGPSGNI=1 or a specific password. Without this, the change command will return ERROR . The primary command is AT+EGMR . The syntax varies by firmware variant. (This is why 2G is being sunset

However, developers and system integrators frequently search for a specific, sensitive command: