Quectel Change Imei May 2026

The primary method for changing or repairing an IMEI on Quectel modules is through the undocumented AT+EGMR command. While Quectel generally prohibits IMEI modification for end users and does not document this command in official manuals, it is commonly used for "repairing" modules that have lost their identity due to firmware corruption or to comply with local regulations requiring specific IMEI formats. AT Command Method

AT command (if supported)

AT+EGMR=1,7,"new_imei_15digits"

• The IMEI is stored in hex format across multiple NV items (e.g., 550, 551, 552).
• Write the new IMEI digits in reverse order (Qualcomm stores IMEI in little-endian).

Serial Port Access: You must connect to the module's AT Port using tools like PuTTY, MobaXterm, or dedicated Qualcomm serial tools. quectel change imei

Response: +CGSN: 352123109876543

Prerequisites

• Physical access to the device and its serial/USB debugging interface (AT command port).
• Terminal program (minicom, PuTTY, Tera Term) or manufacturer tool.
• Correct USB/serial drivers installed and module visible as a COM/tty device.
• Backup current settings and IMEI (recorded).
• Power supply stable; do not interrupt firmware operations.

2. Background on IMEI and Quectel Architecture

2.1 IMEI Structure

An IMEI consists of:

Part 9: Automation – Scripting IMEI Change for Mass Production

If you are an OEM programming 10,000 modules, use Python with pyserial. The primary method for changing or repairing an