*To backup/restore angry birds save game, Google it. I may post my saved game file later, but currently this is the only tutorial I plan writing.
After following a tutorial to import my previously saved angry birds files to my new iPhone from my Android device, it didn't work. After a lot of google searching and forum scouring, I finally figured out the small problem that was keeping my file from working.
Here's how I fixed it:
1.) Paste your saved game files into your angry birds directory (/var/mobile/Applications/Angry Birds/Documents/
2.) Locate the file you transferred and open File Attributes:click the right carrot to the right of the filename (>).
3.) Under 'Access Permissions', Set the following permissions:
*NOTE: Other configurations may work but I haven't tested them. These permissions worked for me.
a.) User: Read, Write, Execute
b.) User: Read, Write, Execute
c.) User: Read, Write
When you open up angry birds again it should have all your old scores and stars.