Comprehensive Guide to Quectel IMEI Modification: Methods, Commands, and Legal Implications
: The primary (though often undocumented) command is AT+EGMR=1,7,"[NEW_IMEI]" .
Disclaimer: This information is provided strictly for educational and engineering research purposes within authorized, legal development frameworks. Unauthorized modification of device identities on public networks can result in permanent device blocking and legal penalties. 2. Understanding Quectel AT Commands for IMEI Management
If you have made a factory reset ( AT+QCFG="ResetFactory" ) after changing the IMEI, some modules may revert to the IMEI that was active before the reset, which could be the modified one instead of the factory IMEI. In that case, simply reapply the original IMEI using the same command. quectel change imei
→ Connect to the same port.
If an IMEI is modified to an invalid string or a number that does not match the strict Type Allocation Code (TAC) properties required by the network carrier, the cell tower will reject the device during the IMSI attach procedure.
The feature utilizes specific to interface with the modem's non-volatile memory. → Connect to the same port
The IMEI was written to temporary volatile cache rather than the permanent OTP (One-Time Programmable) memory or secure NVRAM block.
Quectel wireless modules are widely used in industrial IoT, automotive systems, and router applications. For developers, network engineers, and system integrators, understanding how to interact with the device's firmware and configuration registers is a core part of hardware testing.
Example output:
Type AT+CGSN to note the factory IMEI. Execute Write Command: Enter AT+EGMR=1,7,"860434041234567" . Receive Confirmation: The module should return OK .
AT+EGMR=1,7,"YOUR_15_DIGIT_IMEI"