Wait for the terminal response. A successful command returns: OK Use code with caution. Method B: Engineering Mode Unlock (Advanced Modules)
Verify the current state of the device using these standard commands:
Open your chosen serial terminal tool and open the connection using these settings: Baud Rate: 115200 (default for most Quectel modules) Data Bits: 8 Parity: None Stop Bits: 1 Flow Control: None quectel change imei install
The target digits must be converted into Hex-coded format using specific byte-swapping (Hex-swizzling) required by Qualcomm architectures.
Replace YOUR_NEW_15_DIGIT_IMEI with the exact 15-digit code you intend to program. Wait for the terminal response
Download and install the official Quectel LTE Windows USB Driver . Once installed, connect the module to your computer via USB. Open the Device Manager to verify that several serial ports have appeared, specifically the Quectel USB AT Port .
If the command fails, the module firmware might be protected. Some newer firmware versions strictly restrict modifying the NVRAM section containing the IMEI. Open the Device Manager to verify that several
This guide provides an exhaustive, step-by-step technical breakdown of how to change, configure, and verify the IMEI on Quectel modules using standard AT commands. ⚠ Important Legal and Compliance Notice
Plug in your module via USB and open . You should see several new ports under "Ports (COM & LPT)": Quectel USB AT Port (Used for sending commands)
The process of changing the International Mobile Equipment Identity (IMEI) on a Quectel cellular module is typically sought after for device recovery, testing, or specific network compatibility requirements. However, modifying an IMEI can be subject to strict legal regulations depending on your jurisdiction. This technical guide outlines the standard engineering methodology for flashing firmware, installing necessary tools, and utilizing AT commands on Quectel modules. Understanding the Risks and Legalities
Used for firmware flashing and deep packet logging. NMEA Port: Delivers GPS/GNSS location data streams.