Quectel Ec25 Change Imei ((exclusive)) Jun 2026

This is the most common error when using AT+EGMR .

If the IMEI resets back to original factory parameters upon power-cycling, the module firmware might possess an OTP (One-Time Programmable) secure lock or secure boot enabled by the hardware integrator.

Ensure the correct Windows or Linux USB drivers are installed so the system recognizes the module's serial interfaces (specifically the AT Command port). quectel ec25 change imei

After receiving an OK response from the terminal, the new IMEI must be committed to the permanent flash storage. Reset the module via software to apply changes: AT+CFUN=1,1 Use code with caution.

Or via usb_modeswitch .

The terminal will display a 15-digit number. Copy and save this string safely. If anything goes wrong, you will need this original number to restore functionality. Check Firmware Version

An active or test SIM card (depending on whether you are connecting to a live or simulated network). Software Requirements This is the most common error when using AT+EGMR

Quectel modules protect sensitive NVRAM (Non-Volatile Random-Access Memory) parameters behind access commands. To unlock the ability to write a new IMEI, issue the following proprietary Quectel command: AT+EGMR=1,7,"YOUR_NEW_15_DIGIT_IMEI" Use code with caution.

Connect to the module via your terminal software and check the current IMEI and firmware version to ensure proper communication. Command to check IMEI: AT+GSN Use code with caution. (The module will return the current 15-digit IMEI number). Command to check firmware version: ATI Use code with caution. Step 2: Enter the Secret Command Mode After receiving an OK response from the terminal,