: This often occurs if the modem is actively managed by a service. On Linux systems, stop the ModemManager service before sending commands.
: Send AT+CGSN or AT+EGMR=0,7 to verify the current number. Update IMEI : Send AT+EGMR=1,7,"YOUR_NEW_IMEI" .
The most direct method is using the AT+EGMR command via a serial terminal (like PuTTY or MobaXterm ). quectel ec25 change imei
: Modification may fail if the module is connected via certain WAN interfaces. Disconnect external ethernet or network cables during the process. 2. Fastboot Method (For Advanced Recovery)
If the IMEI was lost due to a catastrophic firmware flash (e.g., using the -e argument in QFirehose), a deeper fix may be required: Enter using AT+QFASTBOOT . Use the command fastboot oem fix_imei [YOUR_IMEI] . Continue booting with fastboot continue . Legal and Ethical Considerations Before proceeding, it is critical to understand the risks: Instructions to change the IMEI - PinePhone - PINE64 Forum : This often occurs if the modem is
There are two main ways to interact with the EC25's identity: using through a serial terminal or fastboot for deeper system recovery. 1. Using AT Commands (Recommended for Repair)
Changing the IMEI of a Quectel EC25 module is primarily used for —restoring a valid ID after firmware corruption—or to ensure compatibility with specific carrier whitelists. Technical Methods for IMEI Modification Update IMEI : Send AT+EGMR=1,7,"YOUR_NEW_IMEI"
: Restart the module with AT+CFUN=1,1 and check again with AT+CGSN . Troubleshooting common errors:
