Untethered jailbreak is available for all devices with iOS 6.0 – iOS 6.1.2. This includes:
If you don’t need cellular unlock use Evasion utility, tutorials are available here:
If you need custom firmware to preserve baseband modem version for iPhone unlock use SnowBreeze. Tutorials are here:
The iPhone Dev-Team has released UltraSn0w 1.2.8 to bring unlock support for some older basebands on iOS 6.1.
MuscleNerd commented in twitter:
Version 1.2.8 is compatible with 6.1 main firmware
Here are step-by-step tutorials that will guide you through all the process of jailbreaking iOS 5.1 and iOS 5.0.1 with sn0wbreeze, redsn0w, pwnagetool and absenthe:
iPhone 4S
UnTethered jailbreak iOS 5.0 / iOS 5.0.1:
iPhone 4
Tethered jailbreak iOS 5.1:
UnTethered jailbreak iOS 5.0.1:
This tutorial is for those users of locked iPhone 3GS and iPhone 4, who updated to iOS 5.0.1 and realized that ultrasn0w unlock doesn’t work there.
Indeed DevTeam have not updated software unlock utility ultrasn0w to work with the latest iOS 5.0.1. There are two workarounds, that will make ultrasn0w work on 5.0.1.
This is step-by-step instructions on how to jailbreak and unlock your iPhone 3GS on iOS 4.2.1 firmware using RedSn0w 0.9.6b5 for Windows.
For iPhone 3G use this tutorial.
If you have an iPhone 3GS with the new bootrom you will only be able to perform a tethered jailbreak at this time. This means you will need Redsn0w’s assistance to boot into your jailbroken device.
IMPORTANT FOR UNLOCKERS
During this process you can update your baseband to the 06.15 version. If you are on 05.14 or 05.15 or higher you will need to do this to unlock. You do not need to do this for jailbreak only. Please read the following very carefully before deciding whether to do this.
