1. Only firmware version V12.01.01.X can be upgraded to this firmware.
2. Please upgrade your device by cable connections.
3.Please unzip the file you downloaded and use the file ended with "bin" or "trx" to upgrade your device.
4.Do not power off the device when upgrading.
5. Fix reset bug.
6. Wan Ping is on by default.
7. Fix dial-up bug.