mobile

I have been successfully using a Bluetooth keyboard on all my android devices operating on Android 4.0.4, 4.1.11, 4.2.2 etc. Recently I bought a tablet with Android 4.4.2 and my Bluetooth keyboard doesn't work correctly. It does pair but the prints different characters for different keys pressed. None of the numbers print the correct input and also some letters .. eg when I press 'w' it prints 'z' and many similar errors. My tablet is 10.1 inch Polaroid MID4x10 and it works well for all other applications and the battery lasts for over 5hrs when playing 720p movies. It has GPS as well.

I believe that this version 4.4.2 of Android has been loaded with a wrong keyboard driver.

Any help will be highly appreciated.