Hi i got an iphone 3gs on 4.0.1 jb and will be getting am i4 thos week. I have a couple of games which i dont want to lose save games from.
How do i transfer them?
You can do it one of two ways. Ethier choose the restore from backup option when you first connect the new phone to your computer or get appbackup from cydia.
appbackup
I use it all the time it's the best.
Backup your app store apps 1 by 1 is best cause if you press all it may take a while and it'll look as though it's frozen but it's just saving data.
Another way is to go to the the app's dir and go in documents, you'll see some files most probably .bin or .sav, grab them all and put them in the same place on your i4
PS if there are no files in documents look in the library folder