Quectel Change Imei Install

The module firmware has locked security write access. You must use hardware test points (boot pins) to force the module into EDL mode to modify raw partitions.

Use an external, dedicated power supply for the evaluation board rather than relying solely on host USB bus power. 3. The Network Rejects the Module After Installation

The you are seeing when you try to apply the changes? The operating system of your host computer?

Some network operators also check the IMEISV, a two‑digit software version number appended to the IMEI. Users have reported on the Quectel forums that while they can change the main IMEI, they are unsure how to modify the IMEISV on modules like the EG25‑G. At present, no publicly documented method exists for changing the IMEISV, and it may be permanently tied to the firmware version. quectel change imei install

115200 (default for most modules, though some autodetect speed). Data Bits: 8 Parity: None Stop Bits: 1 Flow Control: None

Before attempting any changes, you must establish a stable communication link with the modem.

You're looking to modify the IMEI (International Mobile Equipment Identity) on a Quectel module, which is a type of cellular module used in IoT devices. The module firmware has locked security write access

When AT commands are blocked or the IMEI is completely corrupted (e.g., after an improper firmware flash), you may need to use Qualcomm’s low‑level tools. This method is significantly more risky and should only be attempted by advanced users.

To ensure the change is persistent and active on the network, restart the device: AT+CFUN=1,1 . Important Considerations

If commands are locked, engineers use tools like or QPST (Qualcomm Product Support Tool) to interact directly with the module's non-volatile storage blocks while the module is in Emergency Download (EDL) mode. Launch the flash utility. Select the correct target target comport (Diagnostic Port). Load the specific firmware package or configuration file. Some network operators also check the IMEISV, a

Open your computer’s Device Manager (Windows) and locate the under the "Ports (COM & LPT)" section.

Changing the IMEI on a cellular module or any device may be subject to local regulations and laws. It's essential to ensure that any modifications comply with the relevant laws and regulations in your region.

Wait 10 to 15 seconds for the module to reboot and re-establish the USB serial connection. Re-query the IMEI configuration: AT+CGSN Use code with caution.