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Semi Untethered Jailbreak iOS 5.1 with RedSn0w 0.9.10b6

Apple yesterday has officially released iOS 5.1 for everyone. Amοng thе notable additions аrе Japanese language support fοr Siri, camera enhancements, аnԁ thе ability tο delete photos frοm users’ Photo Streams. Can we jailbreak the latest iOS 5.1? The answer is yes! By now, you can jailbreak iOS 5.1 using the iPhone dev-team’ s RedSnow 0.9.10b6.It works for all iPhone, iPad and iPod touch devices except, of course, the iPhone 4S and the iPad 2. But, please note that this is the tethered jailbreak, meaning you will need to connect your device to a computer to boot tethered each time it is switched off for whatever reason. The ‘SemiTether’ patch eases the tethered scenario by allowing devices to boot without connecting to a PC or Mac, although features are extremely limited, thus it will have to be booted tethered in order to function at optimum level once more.

Semi untethered jailbreak ios 5.1

If you are looking for Untethered Jailbreak iOS 5.1, please do not upgrade to iOS 5.1 yet and don’t jailbreak your idevice at all.


  • As already mentioned, this jailbreak does not work on the iPad 2 or iPhone 4S.
  • If you Unlock with GEVEY or Ultrasn0w, DO NOT update to the stock iOS 5.1 firmware. Skip to the latter part of this guide for more info.
  • You will be booting tethered quite a bit, so if you don’t think you can deal with constantly connecting and rebooting, wait for an Untethered or downgrade to iOS 5.0.1/4.x.

Below is the instructions on how to Jailbreak iOS 5.1 using RedSn0w

Step 1: Download the latest version of iTunes (10.6)

Step 2: Open up iTunes, and back up your device.

Step 3: Upgrade your firmware to iOS 5.1. [download links]

Step 4: Download the latest version of RedSn0w (Windows/Mac)

Step 5: Start Redsn0w, select “Jailbreak” then “Install Cydia”. Follow the steps to place your device into DFU mode.

Jailbreak iOS 5.1

Jailbreak iOS 5.1 on iPhone,iPad,iPod Touch

Jailbreak iOS 5.1 on iPhone,iPad,iPod Touch

Step 6: Now we move on to the process where you will need to repeat every time your device is switched off. This is called tethered boot. Launch Redsn0w, select “Extras”, then”Just Boot” in order to boot your device tethered.

Semi Untethered Jailbreak iOS5.1

Booting Semi-Tethered (Optional)

The “SemiTether” patch may work through to 5.1. It’s a cross between tethered and untethered – allowing you to boot your device without a computer, but the available features are somewhat limited, so you’ll need to boot tethered through Redsn0w in order to enjoy a fully-functional break. It’s free, and available over at the BigBoss repo:http://thebigboss.org/semitether.

Semi Untethered jailbreak ios 5.1 on iPhone,iPad,ipod Touch

Note To Unlockers:

If you use the GEVEY SIM interposer or Ultrasn0w to Unlock your iPhone, you will need to create a custom .iPSW, in order to preserve your baseband.

In Redsn0w, select “Extras”, then “Custom IPSW”, locate your iOS 5.1 file, and let Redsn0w work its magic.

Then enter pwned DFU mode (Extras > Pwned DFU) and restore to your custom firmware via iTunes. After that, you’ll be able to unlock with GEVEY or Ultrasn0w (when it is available).

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