Do you want to save photos from Facebook.app into your camera roll? Well, Good news for you. Soon you will be able to save photos from Facebook.app into the camera roll of your iPhone by using a new jailbreak which is going to be released in Cydia. The name of this tweak is FBPhotoSave. After installing this tweak on your jailbroken iPhone you will be able to save the Facebook album pictures into the camera roll of your iPhone from the Facebook.app. FBPhotoSave will integrate directly with the native facebook application.
You should note that you will need to have a jailbroken iPhone to install this tweak. If you don’t have a jailbroken iPhone then you can follow the step by step instructions posted here to jailbreak your iPhone on iOS 4.2.1 with Redsn0w. You can watch the video embedded below to see it in action.