Meaning: Invalid IMEI length or checksum. Ensure digits are exactly 15 digits (0-9 only). No spaces, no letters.
For modules where AT+EGMR is disabled, advanced users sometimes resort to:
If the above works without errors, you have successfully changed the IMEI on your Quectel EC25.
If the IMEI changes but reverts after a power cycle: quectel ec25 change imei
Changing the IMEI of a Quectel EC25 module involves specific AT commands. However, consider the legal implications and whether such a change aligns with your use case and compliance requirements. Always consult with a legal expert or relevant authorities if you're unsure about the regulations in your area.
This is a comprehensive technical write-up regarding the process, implications, and mechanics of changing the IMEI on a Quectel EC25 series LTE module. Meaning: Invalid IMEI length or checksum
Disclaimer: This document is for educational and hardware repair purposes only. Changing an IMEI is illegal in many jurisdictions (including the UK and EU, and restricted in the US) if done to bypass network blocks or mask stolen hardware. Only perform these actions on hardware you own and for legitimate repair or development reasons (e.g., restoring a lost IMEI due to firmware corruption).
Before technical details, it is crucial to note: If the above works without errors, you have