Quectel Ec25 Change Imei -

How to Change the IMEI on a Quectel EC25: A Technical Deep Dive

Step 6: Verify IMEI Change

Send:

AT+EGMR=2,7

or

AT+GSN

Expected response: Your new 15-digit IMEI. quectel ec25 change imei

Also check with:

AT+CGSN=1

7. Real-World Context and Risks

In the IoT industry, legitimate IMEI changes are almost never performed. Manufacturers program IMEIs at the factory, and modules are EOL’d (end-of-life) if the IMEI is corrupted. However, in gray markets, modified EC25 modules appear in: How to Change the IMEI on a Quectel

• Cellular routers sold with “IMEI repair” tools to bypass carrier SIM locks.
• Vehicle trackers altered to evade detection.
• Mobile hotspots reprogrammed with stolen IMEIs from legitimate devices.

These uses expose the modifier to:

• Criminal prosecution – Network operators track IMEI changes and flag anomalies.
• Network ban – The changed IMEI may be cross-checked against GSMA databases.
• Bricked module – Incorrect NV writes can permanently disable cellular functionality.

Alternative Method: Using QCOM Tool (Windows GUI)

If you dislike AT commands, Quectel provides a PC tool called QCOM (Quectel Communication Tool). or AT+GSN

1. Download QCOM from the Quectel resource center (requires login).
2. Connect to the EC25 AT port.
3. Go to Tools → IMEI Writing.
4. Enter the new 15-digit IMEI.
5. Click "Write" and then reboot.

QCOM internally sends the same AT+EGMR commands.