To inspect the factory-assigned international mobile identity: AT+GSN Use code with caution. or AT+CGSN Use code with caution. The module will output a 15-digit numeric string. 3. Checking Network and SIM Status
Changing the IMEI on a Quectel module involves using specific through a serial terminal. This process is typically used for "IMEI repair" rather than standard installation. Prerequisites & Installation
Installed on your computer to recognize the "Quectel USB AT Port".
In many jurisdictions, altering an IMEI is illegal and can lead to criminal charges. Warranty & Security:
The firmware variant installed on the module has locked write access to production identifiers. You must flash an engineering firmware build using QFlash or use the QPST NV restore method. quectel change imei install
: Some kits use AT*MRD_IMEI=W,0101,11JAN1970,YOUR_NEW_IMEI after entering a specific "non-production" mode. Important Constraints & Risks
Modifying the International Mobile Equipment Identity (IMEI) of a Quectel module is typically done for , such as restoring a factory IMEI after a firmware corruption. While Quectel does not officially support or provide commands for customers to modify IMEIs, the industry-standard AT+EGMR command is widely used by developers for this purpose. Prerequisites and Installation
: Use a serial terminal tool (like Minicom on Linux or PuTTY on Windows) to access the modem's AT command port. Verify Connection and press Enter. You should receive an Check Current IMEI to see the current IMEI programmed into the device. Change the IMEI : Use the following syntax: AT+EGMR=1,7,"[15-digit-IMEI]" AT+EGMR=1,7,"123456789012345" Save and Reboot
AT+CGSN=1
Test the connection by typing AT and pressing Enter. The module should immediately return OK . Part 3: Essential Commands for Engineering Diagnostics
For Quectel modules built on non-Qualcomm chipsets (such as certain BG95 or standard IoT variants):
Execute:
: Download and run the setup file for the Quectel USB Drivers to ensure your PC recognizes the module's COM ports. Prerequisites & Installation Installed on your computer to
Send the command to open the diagnostic port: AT+QCFG="usbnet",0 Use code with caution.
If you answer “yes” to all three, then the methods in this guide will help you achieve your goal. If you are uncertain, consult a telecommunications professional or your local legal advisor. IMEI modification is a powerful tool, but like any powerful tool, it must be wielded with caution, respect for the law, and a clear understanding of the consequences.
Once the module reboots, run AT+GSN again to verify the new IMEI is active. If the command returns ERROR , consider the following:
Always save the original IMEI, as you may need to restore it to revert the module to its factory state. Conclusion If the command returns ERROR