Change Imei | Quectel Ec25

| Aspect | Original IMEI | Changed IMEI | |--------|---------------|---------------| | Registration on LTE | ~3 sec | ~3 sec (no difference) | | Data throughput | 50 Mbps down | 50 Mbps down | | VoLTE (if enabled) | Works | Works only if IMEI range matches device type | | Carrier OTA updates | Works | May fail if IMEI doesn’t match device model in carrier DB |

If you receive ERROR , your module is write-protected. You must disable protection via USB Diag port (not the standard AT port). Connect to the (usually USB interface 2 or 3) and send: quectel ec25 change imei

, are marketed with "IMEI Changeable" as a key feature, often utilizing proprietary software or scripts to bypass standard firmware locks. Quectel Forums 2. Legal and Compliance Risks | Aspect | Original IMEI | Changed IMEI

To make it truly permanent (without Quectel’s signing tool), you cannot. The module always retains a golden copy in write-once memory. AT+EGMR simply overlays it in the EFS. Quectel Forums 2

The following is a detailed look at the mechanisms, legalities, and risks associated with this undocumented procedure. 1. The Mechanism (Undocumented Commands) Standard AT commands used to read the IMEI, such as

One of these will work depending on your EC25 firmware revision (check with AT+CGMR ).