Quectel Change Imei |link| Review

If that fails, you may need to restore a full firmware image (including the NV partition) from a known‑good backup. Quectel’s official repair tools (such as QFlash) may be required, but access to those is typically restricted to authorized partners.

To identify your module's current IMEI, you can use the standard AT+CGSN or AT+GSN commands. AT+CGSN Response: 860195057712345 2. The Repair Command ( AT+EGMR ) quectel change imei

Standard production firmware on Qualcomm chipsets often locks the AT+EGMR write command. Executing it will return an ERROR or +CME ERROR: 17 (Operation not custom-allowed). If that fails, you may need to restore

Register your Quectel module with the network provider, especially for industrial and IoT applications [2]. AT+CGSN Response: 860195057712345 2

Send AT command: AT+QCFG="usbnet",0 (enables DIAG+NMEA+MODEM ports)

Before making changes, log the original manufacturing data. Open your serial terminal, connect to the or Modem Port at a baud rate of 115200 , and send: AT+GSN Use code with caution. Alternatively, you can use: AT+CGSN Use code with caution.