: Using an "illegal" or unrecognized IMEI may prevent the module from registering with local carriers. Common Methods for IMEI Modification

Quectel strictly advises against unauthorized IMEI modifications to prevent network compatibility issues. To change it officially: : Send an email to support@quectel.com.

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Connect the Quectel module to a PC. Open the Device Manager, look under "Ports (COM & LPT)," and identify the . Step 2: Set Serial Parameters Configure your serial port tool to: Baud Rate: 115200 Data Bits: 8 Stop Bits: 1 Parity: None Step 3: Attempt IMEI Modification

On certain secure boot modules, changing the IMEI via AT commands only alters the temporary runtime cache. Upon a hard power cycle, the module reads the original factory-fused identity from the secure element, reverting the change.

To stay compliant and avoid bricking hardware during development:

Where: