The OS 4.3 does not work very well with most softwares..
What does work usually is if you try to download OTA... the desktop software has an error when you try to install software on the new OS because it doesn't recognize it...
Try OTA, and if that fails i guess you're with a lot of us and have to wait for an update of some sort
I can tell you Tetris works and it beats working. Got it OTA from Handmark. Always a great time waster. Google maps mobile works well but my location was off by about a mile. Both downloaded today.