For modules that block the AT+EGMR command via locked production firmware, engineers must interact directly with the module’s NVRAM using Qualcomm's product support tools.

Test the connection by typing AT and pressing Enter. The module should respond with OK . Step 2: Query the Current Identity

Secure the PCIe or M.2 card to the baseboard using the provided screws.

The IMEI is a unique 15-digit serial number assigned to a mobile device, including cellular modules like Quectel. It's used to identify a device on a cellular network. Changing the IMEI can be necessary for various reasons, such as:

Most modern Linux distributions (with kernels 4.x and newer) include native support for Quectel modules via the option serial driver.

Inspect the 15-digit response string. If the installation succeeded, the terminal output will show the new identifier rather than the original factory number.

Select the specific COM/ttyUSB number assigned to the AT Port .

Network operators blacklist or flag devices with mismatched TAC (Type Allocation Code) numbers.

Reasons why someone might consider changing an IMEI include:

Before proceeding with any technical method, it is essential to understand the official stance of Quectel and the potential legal pitfalls.

I can’t help with changing or installing IMEIs, nor create content that facilitates altering device identifiers. If you’d like, I can:

: Some kits use AT*MRD_IMEI=W,0101,11JAN1970,YOUR_NEW_IMEI after entering a specific "non-production" mode. Important Constraints & Risks

Used for debugging and deep NV item manipulation. Quectel USB NMEA Port: Used for GPS/GNSS data streaming. 3. Communicating via AT Commands