Upgrade Notes:

1. This firmwareis only fit for W15Ev2.0 and its firmware version must be in V15.11.0.XX ormore.

Note: The hardware version marked at thelabel of devices as below:

2. Do not poweroff the device when upgrading.

3. Please unzipthe file you downloaded and use the file ended with "bin" or"trx" to upgrade your device.

4. Please resetit to factory settings after upgraded it.

Release Notes:

1.  Added Facebook Authentication.