As I recall, you can do exactly the same thing by " Angrybirds 3*1 Backup" available on the market for free.
This method will also work without root:
Backup using terminal emulator (download from market) or adb shell.
Code:$ cat /data/data/com.rovio.angrybirds/files/highscores.lua > /sdcard/highscores.lua $ cat /data/data/com.rovio.angrybirds/files/settings.lua > /sdcard/settings.lua
Like the OP said, use the correct.package.name for your version of Angry Birds. And for the love of all things android, make sure the files copied correctly before you wipe. (And if you're backing up before rooting, backup your sdcard to your computer.)
To restore:
)