Install |work| | Quectel Change Imei

Before making changes, document the original factory identifier: : AT+GSN or AT+CGSN=1 . Response : Returns the current 15-digit IMEI. 3. Apply New IMEI Most modern Quectel modules use the +EGMR command. Command Structure : AT+EGMR=1,7,"[15-digit_IMEI]" Action : Open the serial tool at 115200 baud . Type the command with the new 15-digit number in quotes. Receive response OK .

Confirm that the output matches your intended configuration. Save the configuration to active memory profiles: AT&W Use code with caution. Troubleshooting Common Issues

Type AT and press Enter. You should receive an OK response. If you don't, check your COM port and connections. Step 3: Verifying the Current IMEI

Always verify and back up the current device state before initiating an installation or rewrite sequence. Use the following standard commands to read the current IMEI: Instructions to change the IMEI - PinePhone - PINE64 Forum quectel change imei install

The following procedure is known to work on Quectel EC25, EC21, EG95, BG96, and UC20 with firmware version R02 or later. For older modules (UC15, M95), a different method (using QLoader) is required.

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

Quectel modules utilize specific AT commands to read and overwrite identification numbers stored in the module's non-volatile memory (NVRAM). Follow these steps systematically. Step 1: Connect and Verify Communication Apply New IMEI Most modern Quectel modules use

AT+CGMI // Returns the manufacturer name (Quectel) AT+CGMM // Returns the module model (e.g., EC25) AT+CGMR // Returns the current firmware version AT+CGSN // Displays the current IMEI configured on the device Use code with caution. 4. The Modification and Installation Process

Open the Windows Device Manager and expand the Ports (COM & LPT) section. You should see distinct entries for Quectel USB AT Port , Quectel USB DM Port , and Quectel USB NMEA Port , each assigned a specific COM port number (e.g., COM5). Linux Configuration

Your specific firmware build may have removed or locked this production command. You may need to flash an engineering version of the Quectel firmware via the QFlash utility. Receive response OK

Ensure you have installed the correct USB or serial drivers for your specific Quectel module (e.g., Quectel Windows USB Drivers).

Ensure that no other software (like Windows Modem Manager) is occupying the AT port while you are trying to send commands. 5. Summary Table: Required AT Commands AT+GSN Read current IMEI AT+CGSN Alternative read command AT+EGMR=1,7,"..." Write new IMEI to NVRAM AT+CFUN=1,1 Full hardware reset/reboot Conclusion

Your operating system requires specific USB drivers to expose the module's diagnostic, AT, and modem ports. Windows Driver Installation

Many cellular providers prohibit placing a SIM card intended for a smartphone into a cellular router or modem. Modifying the IMEI to match a smartphone plan is a violation of the carrier's Terms of Service (ToS) and can result in account suspension.