Quectel Ec25 Change Imei 💯

: Any modification of the IMEI listed on the warranty card immediately voids the manufacturer's warranty. EFS Corruption

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.

If you want to read the IMEI specifically via the EGMR syntax first to verify it works, use: AT+EGMR=0,7 Use code with caution. Step 4: Write the New IMEI quectel ec25 change imei

Quectel does not provide public AT commands or tools for IMEI modification. Legitimate users (such as OEMs or authorized repair centers) must follow this process: Quectel Forums Contact Support : Send an official email to support@quectel.com Sign Agreements

Before making changes, verify that the terminal is communicating with the module and record the current IMEI. : Any modification of the IMEI listed on

A USB-to-TTL serial adapter (if not connecting directly via the module's native USB interface).

If it returns a list of operators, the IMEI is structurally valid and accepted by the radio hardware. If it returns +CME ERROR: no network service , the IMEI may be blacklisted or invalid. AT+EGMR simply overlays it in the EFS

The ability to modify the IMEI via AT commands depends heavily on the specific firmware version installed on your Quectel EC25. Newer production firmware versions often lock these commands to comply with regulatory security standards. Prerequisites and Setup

7 specifies the storage index or parameter corresponding to the primary IMEI.

If the IMEI resets back to original factory parameters upon power-cycling, the module firmware might possess an OTP (One-Time Programmable) secure lock or secure boot enabled by the hardware integrator.