AT+RESET
Perform a full power cycle (remove VBAT for 30 seconds). Then re-query:
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 . quectel ec25 change imei
The Quectel EC25 (variants: EC25-A, EC25-E, EC25-AU, EC25-V, etc.) comes pre-programmed with a factory IMEI. Usually, this is printed on a sticker on the module’s shielding. By default, this IMEI is read-only via standard AT+CGSN commands.
This is a comprehensive technical write-up regarding the process, implications, and mechanics of changing the IMEI on a Quectel EC25 series LTE module. AT+RESET Perform a full power cycle (remove VBAT
Modifying sensitive NV (Non-Volatile) variables like the IMEI requires entering a specific engineering password command. This unlocks the protected memory partitions of the Qualcomm MDM9x07 chipset powering the EC25. Execute the unlock command: AT+EGMR=1,7,"" Use code with caution. The modem should return OK . Step 4: Write the New IMEI
This package is designed to fix the EFS corruption on the latest Quectel modems. However, one topic that generates constant discussion in
AT+EGMR=1,7,"your_new_15-digit_IMEI_here"
There are two predominant methods for interacting with the EC25's EFS to modify the IMEI. The first is the most accessible, using a simple AT command. The second is more advanced, involving the restoration of a full configuration file.
First, a necessary disclaimer: Legitimate use cases exist, but they are narrow.
Before proceeding, you must understand the legal implications of changing an IMEI: