How to Jailbreak iPhone 4 and iPhone 3GS over iOS 5 with RedSn0w 0.9.9b5

The guide below will work to jailbreak iOS 5 on iPhone 4, and iPhone 3GS with RedSn0w 0.9.9b5. This is a tethered jailbreak that means you always need to attach your iPhone to system for each reboot.


RedSn0w for iOS 5

Jailbreak iOS 5 with RedSn0w 0.9.9b5

Requirements:

  • Update iOS 5 on your iPhone 4 or iPhone 3GS
  • Download RedSn0w 0.9.9b5 for Windows / Mac (At the moment RedSn0w 0.9.9b5 for Windows is not available.)

Step-1

Unzip RedSn0w 0.9.9b5 file and then double click on Redsn0w application icon

Step-2

Click “Jailbreak” button on Redsn0w screen

Step-3

Make sure your iPhone is OFF and plugged into computer, then click Next

Step-4

Follow the on screen instructions to get your iPhone into DFU mode as:

Hold down the Power (corner) button for 3 seconds

Without releasing Power button hold down Home button for 10 seconds

Release Power button by keep holding Home button for 15 seconds

Step-5

Wait while your iPhone get reboot

Step-6

Redsn0w will start preparing jailbreak data

Step-7

Check mark the box with “Install Cydia” and go Next

Step-8

Your iPhone will reboot and Redsn0w will start uploading ramdisk, on completion Done! message will appear

Step-9

Let your iPhone get reboot, on finish it will be jailbroken and Cydia icon will appear on Springboard

How to Boot Tethered

Step-1

On Redsn0w first screen click on “Extras” button

Step-2

Click “Just boot” button and that’s it

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