iPhone App Update 3

Hi, I have an existing iPhone game application and I need to make some changes. - the graphics of the main character blinks. This can be seen only on iPhone, not in simulator. - add level and world's prerequisitions (I know what to do in this point) - adjust the main characters movement. It moves too fast and when it picks up an items it "jumps" into the next square (map is divided into squares). I want smooth and slow movement. It must be easy to control by player. All changes must be tested on real device (not only in simulator) and the app uploaded into my developer account. Game is very simple, it doesnt have complicated code. Changes must be made in full and lite version. itunes : [login to view URL]