Quectel Change Imei Install -

How to Change and Install a New IMEI on Quectel Modules: A Complete Technical Guide

2.3. "Installation" of a New IMEI

Technically, "installing" a new IMEI usually refers to the use of diagnostic tools or AT commands.

AT Commands: Older or unprotected firmware versions might allow the command AT+EGMR to write to the NVRAM.
QFirehose / QPST: Advanced users attempt to use Qualcomm tools to overwrite NVRAM partitions.
Hardware Limitation: On secure modules, these methods result in a "Write Failed" error because the hardware prevents modification of the protected partition.

4. Security Risks and Operational Impact

Attempting to change the IMEI on a Quectel module introduces severe operational risks:

Permanent Device Bricking: If the write process is interrupted or incompatible firmware is used to bypass protections, the module may enter a non-recoverable state (hard brick). The bootloader or baseband processor may refuse to boot if integrity checks fail.
Network Blocking: Mobile Network Operators (MNOs) utilize Equipment Identity Registers (EIR). If a module transmits an IMEI that is malformed, duplicates an existing active IMEI (cloned), or is flagged as invalid, the network will deny registration (Attach Reject).
Voided Warranty and Support: Any attempt to modify the IMEI voids the Quectel warranty immediately. Quectel technical support will refuse assistance for any module flagged as tampered with or showing IMEI integrity errors.

Phase 1: Enter Diagnostic Mode

Send the following AT command to switch the module to download mode:
```
AT+QPOWD=1
```
Wait for the module to power off.
Manually force the module into diagnostic mode by pulling the RESET pin low while keeping the USB_BOOT pin high (check your module’s hardware manual for exact pins). Alternatively, use the software method:
```
AT+QCFG="usbnet",0
AT+CFUN=0
AT+QPRTPARA=3
```
This varies by module. The most reliable method is using QFirehose which sends a special loader.

Safer Alternative

Use IMEI overwrite via USB QMI or MBIM commands if supported, or test using a simulated environment (e.g., Quectel QCM) rather than real cellular networks.

Modifying the IMEI on Quectel modules is a common but sensitive procedure primarily used for "IMEI repair" or to bypass carrier restrictions. While technically possible through specific AT commands or third-party tools like DC-Unlocker, it is officially discouraged by Quectel and is illegal in many jurisdictions. Performance & User Experience

Users generally report success with this process to enable high-speed data plans on third-party modems.

Changing the IMEI on a Quectel module involves using specific AT commands through a serial terminal. This process is typically used for "IMEI repair" rather than standard installation. Prerequisites & Installation quectel change imei install

Before modifying the IMEI, you must establish a serial connection with the module:

Install Drivers: Download and run the setup file for the Quectel USB Drivers to ensure your PC recognizes the module's COM ports.

Identify the Port: Open Device Manager and find the port labeled Quectel USB AT Port.

Terminal Tool: Use a serial port tool like PuTTY or MobaXterm set to the default baud rate (usually 115200) to send commands. How to Change the IMEI

For most modern Quectel modules (like the EC25 or EG25-G), the following commands are used: Query Current IMEI: AT+CGSN or AT+EGMR=0,7. Write New IMEI: AT+EGMR=1,7,"YOUR_NEW_15_DIGIT_IMEI".

Alternative (MikroTik/LTE6): Some kits use AT*MRD_IMEI=W,0101,11JAN1970,YOUR_NEW_IMEI after entering a specific "non-production" mode. Important Constraints & Risks How to Change and Install a New IMEI

Legal Restrictions: Tampering with an IMEI is illegal in many jurisdictions, including the UK and India, as it can be used to bypass blacklists or interfere with law enforcement.

Firmware Support: Quectel officially states they do not provide commands to modify IMEIs to customers. Some firmware versions may block these commands entirely.

Carrier Issues: If a carrier detects an unauthorized IMEI change, they may block the device from the network. How to change the IMEI of Mikrotik SXT LTE6 kit

Recommended Tool for "Install & Change"

Windows: QCOM (Quectel COM Tool) – sends AT commands easily.
Linux: minicom or screen with echo enabled.
Production: Python script using pyserial to automate AT+EGMR after driver install.

Step 3.2: Install Quectel USB Drivers

Download the latest Quectel_USB_Drivers_XXX.zip from the official Quectel support site (requires login or request via FAE). Install by running DriverInstaller.exe. After installation, plug in the module. You should see multiple COM ports in Device Manager:

AT Port (usually COM port number)
Diagnostic Port (for firmware updates and IMEI change)
NMEA Port (GPS)
Modem Port

For IMEI change, you will primarily use the AT Port and later the Diagnostic Port.

Prerequisites

Quectel module with firmware that supports IMEI change (check AT command set).
Serial communication tool (e.g., PuTTY, minicom, or a custom script).
AT command access to the module.
Write authorization – some modules need a special AT command to enable NVRAM write.