Help unknown-source apps+MPS

[expet87]

Hi;

I bought my s3 yesterday , whenever I try to install apps from any unkown source the install button doesn't work!

I've allowed the installation of unknown source apps, but even after that the screen pops out asking "DO you want to install this program? " , only the cancel button works,,,,


the other issue which I've seen many threads for,,,,no solution worked for me though , is the MTP driver fail , I tried numerous solutions including removing and installing Kies, installing some MTP protocol, manually adding drivers...none worked so far (This issue happened only after the last software update)

how to solve those 2 issues? and is it possible to go back to the previous software version since such issues appeared only after the update?

 

[expet87]

After so many trials I was able to solve 3 issues:
1- Phone not connecting to PC , Kies cannot find the phone (MTP)
Solution : Reset Factory Settings.

2- Bluetooth not found, not connecting to PC
Solution: Old Bluetooth Dongle drivers.

3- Install Button doesn't Work for unkown source apps
Solution: Disable Screen Filter!

Regards;