Mythul from iPod Touch Fans has posted a guide on how to get all the levels on Super Monkey Ball. Here is how to do it:
Firstly download this file statebin.zip from HERE (MAKE SURE YOU BACKUP THE ORIGINAL FILE FIRST)
2) Reset your previous ranking
3) Extract state.bin from the zip file, and upload it to/var/mobile/Documents/ use OpenSSH f
4) Change the permission of state.bin to 644 or 0644 depends on the SSH client you are using (if the previous number is 3 digits use 644, 4 digits use 0644)
5) If it doesn’t work, copy state.bin to /user/Documents/, and also change the permission.
6) Play all the levels and finally have FUN !
Via iPod Touch Fans