There are various software apps that you can rely on when you are thinking about unlocking your device and Redsnow is just one of these programs. It supports untethered jailbreaking and you can use it with various iPhone versions. However, you need to know that before following the iPhone 4S Jailbreak Instructions, you are facing the risk of voiding the warranty of your device. Before proceeding with the entire jailbreaking process, be sure to have a backup of your device so that you won’t be worried when all of the information in the phone gets wiped out. Be sure to read the tutorials first to be sure that you will do the process right.