Once connected, type AT and press Enter. The module should return OK . If you do not see an echo of your typing, issue the ATE1 command to enable command echoing. Step 3: Backing up Original Configuration and Current IMEI
Verify that the output matches the target 15-digit number you installed. Troubleshooting Common Errors 1. The Terminal Returns "ERROR"
Reboot the module:
In many regions, changing an IMEI is illegal and can lead to network blacklisting or prosecution.
On some development firmware versions or older Quectel modules, the command used to modify the IMEI parameter (usually associated with parameter 7) is: AT+EGMR=1,7,"YOUR_NEW_IMEI_NUMBER" Use code with caution.
The primary interface for sending control commands. Windows Installation Steps quectel change imei install
You're looking for information on changing the IMEI (International Mobile Equipment Identity) on a Quectel module. Here's what I found:
You need a serial terminal emulator to communicate via AT commands. Common choices include: Qualcomm's Serial Port Tool Phase 2: Interacting with the Quectel Module (AT Commands)
A compatible PCIe/M.2 to USB adapter or a dedicated evaluation kit (EVB) for your specific Quectel module.
The current firmware on the module has disabled direct IMEI modification via the AT+EGMR command for security compliance.
Below is a detailed guide on the installation and technical process for modifying the IMEI on a Quectel module using AT commands. Once connected, type AT and press Enter
or
If you receive an ERROR or CME ERROR , the module may be locked, running restricted carrier firmware, or require a security password (such as AT+CFUN=0 or a proprietary safety unlock code) before modification is permitted. Step 5: Save and Reboot the Module
AT+CFUN=1,1
Secure the PCIe or M.2 card to the baseboard using the provided screws.
If the virtual COM ports disappear after modifying settings, use the hardware PERST# (Reset) pin on the development board to force a factory reset, or reinstall the Quectel USB drivers. Summary Checklist for Engineers Command / Tool Expected Outcome Read Current Identity AT+CGSN Displays active 15-digit IMEI Write New Identity AT+EGMR=1,7,"..." Returns OK Apply Changes AT+CFUN=1,1 Module reboots and reloads NVRAM Verify Network Status AT+CREG? or AT+CGREG? Returns 0,1 (Registered on home network) Step 3: Backing up Original Configuration and Current
Modifying the International Mobile Equipment Identity (IMEI) on cellular modules is a critical task for developers, network engineers, and IoT administrators. Whether you are replacing a faulty module and need to clone the authorized identity, testing network behavior under different device profiles, or provisioning hardware for private LTE/5G networks, understanding the exact mechanism for your Quectel hardware is essential.
Changing the IMEI on a cellular module or any device may be subject to local regulations and laws. It's essential to ensure that any modifications comply with the relevant laws and regulations in your region.
in Device Manager (e.g., COM6).
The most commonly cited method involves the Extended Modem Reset (EGMR) command.