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Tutorial – iOS 4.2.1 Jailbreak with Redsn0w 0.9.6b4 [MAC][WINDOWS]

JailbreakNews3 iOS 4.2.1 Jailbreak Tutorial with Redsn0w 0.9.6b4 [MAC][WINDOWS]

As we announced today, the Dev-Team has released its Jailbreak tool.

Some devices will be jailbreak tethered and others untethered.

1121 500x327 iOS 4.2.1 Jailbreak Tutorial with Redsn0w 0.9.6b4 [MAC][WINDOWS]

A new tool with the untethered Jailbreak will be available soon.

Be careful however if you want to keep your unlocking do not update your device.

Even if you are in 4.1 because the unlocking of the latter may not be long.

Compatibility

  • iPhone 3G – unthetered
  • iPhone 3Gs old iBoot – unthetered
  • iPhone 3Gs new iBoot – tethered
  • iPhone 4 – tethered
  • iPod Touch 2G model MC – tethered
  • iPod Touch 2G model MB – unthetered
  • iPod Touch 3G – tethered
  • iPod touch 4G – tethered
  • iPad – tethered

untethered => Do not need a computer to reboot

tethered => Requires a boot using redsn0w

Prerequisites

  1. iPhone 3G
  2. iPhone 3GS
  3. iPhone 4
  4. iPod Touch 2G
  5. iPod Touch 3G
  6. iPod Touch 4G
  7. iPad

Tutorial

Step 1

Update iTunes to be able to update your device to 4.2.1

2nd step

Launch redns0w, click on Browse and indicate the 4.2.1 firmware corresponding to your device.

253 500x558 Jailbreak iOS 4.2.1 Tutorial with Redsn0w 0.9.6b4 [MAC][WINDOWS]

Stage 3

Check the install Cydia box

324 iOS 4.2.1 Jailbreak Tutorial with Redsn0w 0.9.6b4 [MAC][WINDOWS]

Step 4

Put your device in DFU mode by following the on-screen instructions

  • Connect the device to the usb
  • Switch off the device
  • etc …

413 iOS 4.2.1 Jailbreak Tutorial with Redsn0w 0.9.6b4 [MAC][WINDOWS]

When the Jailbreak begins here is what it gives

54 iOS 4.2.1 Jailbreak Tutorial with Redsn0w 0.9.6b4 [MAC][WINDOWS]

Step 6

Your device is now Jailbreak.

73 iOS 4.2.1 Jailbreak Tutorial with Redsn0w 0.9.6b4 [MAC][WINDOWS]

You should have Cydia on your SpringBoard, however to be sure that it will be stable you must reboot the device…

Reboot device

For tethered Jailbreak devices (see compatibility list), here is the procedure to start the device.

Step 1

Launch RedSn0w 0.9.6b4 and indicate the firmware corresponding to your device.

2nd step

Check the box : ” Just boot tethered right now

Stage 3

Put your device in DFU mode following the instructions of Redsn0w…

82 iOS 4.2.1 Jailbreak Tutorial with Redsn0w 0.9.6b4 [MAC][WINDOWS]

Enjoy 😉

the iPhone3GSystem team

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