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iOS 5.1 Jailbreak iPhone 4 – Redsn0w

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You can jailbreak and unlock your iPhone 4 on iOS 5.1 using the latest Redsn0w release . Only A4 devices like iPhone 4 , iPod Touch 4 and iPad are supported by this jailbreak tool . iPhone 4S and iPad 2 are not supported . This is a tethered jailbreak and needs a computer to reboot the device . Gevey Sim and Ultrasn0w users can preserve baseband to unlock their phones . Ultrasn0w will be updated to support this version .

Steps to Jailbreak iPhone 4 iOS 5.1 using Redsnow :

  1. First update your device to iOS 5.1 (Gevey Sim and Ultrasn0w users skip to bottom)
  2. Backup your device using iTunes
  3. Download Redsn0w 0.9.10b6 for Mac and Windows
  4. Launch Redsnow in Administrator mode
  5. Click on Jailbreak and select Install Cydia
  6. Follow on-screen instructions to enter DFU mode
  7. Once jailbroken boot your device tethered . For this select Extras > Just Boot .
  8. (Optional) You can now install Semi-Tether app from Cydia to get partial booting capability .

How to Preserve Baseband using Redsn0w : (Gevey Sim and Ultrasn0w)

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  1. Download the iOS 5.1 ipsw file
  2. Go to Extras > Custom IPSW
  3. After the custom firmware is created you have to install it on your phone using iTunes . For this you have to go Extras > Pwned DFU .
  4. Launch iTunes and press SHIFT + Restore button on iTunes and select the custom 5.1 firmware file created in Step 2 .

Note : Gevey Sim should work right away buy Ultrasn0w users have to wait till a new updated version for 5.1 is released . Stay tuned to get the latest iOS 5.1 Unlock and Jailbreak updates . iPhone 4S and ipad 2 users can subscribe below to get jailbreak updates via email

*IMPORTANT : Check inbox for confirmation mail

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