iPhone 4S/4/3GS Jailbreak- Use Blackra1n Untethered Jailbreak Tool

Blackra1n is appropriate for the firmware 3.1.2. and above so, if your iPhone belongs to this firmware, you can use the Blackra1n jailbreak tool. this tool is reliable and the simple. You will just have to follow some very simple steps to complete the whole process. once you launch the application, you will be guided …