Originally posted by another user
1. Open iFile and navigate to var/mobile/applications/Facebook.app
2. Find info.plist, tab it and then hit Property List Viewer
3. Scroll down to UIDeviceFamily and tap it
4. Change the value of 0: from 1 to 2 (just tap the 1 on the far left of the screen) and then hit done
5. Restart your iPad and load up Facebook!