I used firmware all day. Sorry, it is not suitable for daily use for me. bugs:
1. Flashlight / Flash does not work
2. After some use flash, it begins to slow down: scroll photos, contact lists. Games are slow.
3. At minimum volume phone works aloud. Adjust the volume. At minimum volume phone works aloud. Viper4android not helped
4. Strange works Bluetooth. Hours sometimes lose touch with the phone, it helps to reboot your phone. It indicates that the device is not connected, but the clock is connected and working. (Screenshots)
5. Bad camera quality
6. NFC does not work
The rest works well GPS works.
Thank you very much for your hard work. Sorry for my English.