Answer 1

Hey - do the following to tweak your Jelly Bead powered Sinotec M735 to Android Kit Kat (v4.4)

1. Download and extract the zipped file here http://d-h.st/f6b
2. Move all three APKs contained in the zipped file to your phone if you were using your computer
3. Now install all three APK files starting with the i) PrebuiltGmsCore.apk then the ii) Velvet.apk and lastly install iii) GoogleHome.apk
4. Press and hold the home button and then select the launcher.

There isn't an official 4.4 update available from Sinotec so we can not go the 'Settings > About table > System updates > Check for updates...' route.