Quectel | Ec25 Change Imei

Perform a full power cycle (remove VBAT for 30 seconds). Then re-query:

AT+CGSN

The new IMEI must appear.

AT+CGSN

Output example: 867489032145678

The Quectel EC25 is one of the most popular LTE Cat 4 modules in the M2M and IoT space, prized for its global band support, GNSS integration, and robust AT command set. However, a recurring topic in developer forums and engineering labs is the ability to change its factory-assigned International Mobile Equipment Identity (IMEI). This review explores why one might change it, how it’s done (technically), and the critical legal and operational pitfalls.

Rating: ★★☆☆☆ (2/5) – Technically possible, but rarely advisable.

Bottom line: The Quectel EC25 is engineered to resist casual IMEI changes. While advanced users with Qualcomm tools can succeed, the process is fraught with legal and technical landmines. Instead, work within Quectel’s official channels or design your system not to rely on IMEI as a mutable identifier.

This review is based on reverse-engineering community documentation and personal testing. Always comply with local laws and network operator terms of service. quectel ec25 change imei

To change the IMEI on a Quectel EC25 modem, you can use the AT+EGMR command. While Quectel does not officially document this for customer use to avoid legal or carrier issues, it is often used for "IMEI repair" when the number has been lost during firmware updates. Steps to Change IMEI

Stop Modem Manager: If you are on a Linux system (like Mobian or OpenWrt), stop the modem manager first to prevent port conflicts.

Access the Serial Terminal: Use a tool like minicom, PuTTY, or Quectel's QNavigator to connect to the modem's AT port.

Execute the Command: Enter the following command, replacing the digits with your 15-digit IMEI:AT+EGMR=1,7,"123456789012345"

Note: Ensure you use standard straight quotes (") rather than curly ones (”), as the latter will cause errors.

Verify the Change: Use AT+GSN or AT+CGSN to check if the new IMEI is correctly reported. Perform a full power cycle (remove VBAT for 30 seconds)

Reboot: Reset the modem using AT+CFUN=1,1 to ensure all changes take effect. Troubleshooting Common Errors

Wavecom Q2406B GSM Modem IMEI Change - Sierra Wireless Forum

The Quectel EC25 series is one of the most popular LTE cat-4 modules on the market. Used in everything from industrial routers and vehicle trackers to Raspberry Pi IoT projects, its versatility is unmatched. However, one topic that generates constant discussion in forums and technical circles is the IMEI (International Mobile Equipment Identity).

Searching for the phrase "quectel ec25 change imei" typically leads to fragmented information: half-working AT commands, warnings about legal issues, or outdated firmware guides.

This article aims to be the definitive guide. We will cover why you might need to change the IMEI, the legal and ethical boundaries, the technical prerequisites, and the exact step-by-step commands (using both standard and manufacturer-specific AT instructions).

Crucial Disclaimer: Changing the IMEI of a cellular module is illegal in many jurisdictions (including the US, EU, and China) if done with intent to defraud, bypass network blocks, or hide a stolen device. This guide is for educational purposes, legacy system integration, and testing in controlled lab environments where you own the hardware and have explicit permission from your network provider. The new IMEI must appear

To successfully change the IMEI on a Quectel EC25, gather the following:

Hardware Connection:

AT+QCFG="imei",0,"123456789012345"

If the AT command interface is locked down or returns "Operation Not Allowed," you must access the underlying Qualcomm file system. This mimics the process used on Android smartphones.