In many jurisdictions worldwide (including the United States, the United Kingdom, the European Union, and India), changing the IMEI of a commercial cellular device is under telecommunications fraud and anti-theft laws. The IMEI is a unique identifier used by network operators to blacklist stolen devices and maintain network security.
If AT commands fail, Quectel provides a Windows-based tool called or QFLOG . This method is riskier but works when the module is in emergency download (EDL) mode.
Changing the IMEI of a cellular module is illegal in many jurisdictions (including the US, EU, and China) if done with intent to defraud, bypass network blocks, or hide a stolen device. This guide is for educational purposes, legacy system integration, and testing in controlled lab environments where you own the hardware and have explicit permission from your network provider.
AT+QCFG="imei",0,"123456789012345"
Then recheck:
Writing to the NVRAM/modem partitions carries a risk of "bricking" the device.
Once the module finishes its boot cycle, reconnect your terminal emulator to the AT port and run the check commands again. Check baseline identity: AT+CGSN Use code with caution. Verify the production identity: AT+EGMR=0,7 Use code with caution. quectel ec25 change imei
Quectel requires a special password to modify IMEI:
: A USB cable connecting the module to your computer.
AT+EGMR=1,7,"new_imei_15_digits"
The module will detach from the network, reboot its internal stack, and restart the serial interface. Step 6: Verify the Changes
On many EC25 firmware revisions, Quectel provides a direct command to write the IMEI, typically protected by an access sequence.