How To Jailbreak iOS 4.2.1 (Redsn0w_0.9.6b4)(Windows Mac)iPhone(4g,3gs),iPad (1G),iTouch (2g,3g)

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JAILBREAK INFO:

The iPhone Dev Team has just released Redsn0w 0.9.6b4 today which

brings first proper jailbreak, with working Cydia and

MobileSubstrate for all iOS 4.2.1 devices.
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Extra Info:

For those of you who don't know, Redsn0w 0.9.6b4 is based on

Geohot's Limera1n bootrom exploit which has already pwned all

current iOS devices for life. The only problem is that it is a

tethered jailbreak, which means you will have to boot it into a

"jailbroken state" on every reboot. This so called tethered or

semi-tethered jailbreak condition in Redsn0w 0.9.6b4 however only

applies to the new devices like: iPhone 3GS (new bootrom), iPhone

4, iPad, iPod touch 2G (MC Model), iPod touch 3G and the iPod

touch 4G. Old devices like iPhone 3GS (old bootrom), iPhone 3G and

iPod touch 2G (Non-MC Model) can be jailbroken-untethered right

now using this latest version of Redsn0w. So until and unless

Comex of Spirit and JailbreakMe fame comes up with another

untethered hack for iOS 4.2.1, the jailbreak we get for the newer

devices will be tethered (or semi-tethered).
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NOTE: Those of you who rely on a carrier unlock MUST STAY AWAY

from Redsn0w and iOS 4.2.1.

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Download links:

iTunes 10.1:
http://www.apple.com/itunes/


Apple firmware:
http://www.felixbruns.de/iPod/firmware/


Redsn0w 0.9.6b4 (Windows only):
http://filesmy.com/0I88G0
Redsn0w 0.9.6b4 (Mac only):
http://filesmy.com/0I88G5
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INSTRUCTIONS:

Follow the step by step instructions posted below to jailbreak iOS

4.2.1 with Redsn0w 0.9.6b4:

Step 1: Download iOS 4.2.1 for your version of iOS device.

Step 2: Update/Restore to iOS 4.2.1 firmware using the IPSW file

you just downloaded via iTunes 10.1.

Step 3: Start Redsn0w 0.9.6b4 and point it to iOS 4.2.1 firmware

to proceed with the jailbreak.

Step 4: Now select "Install Cydia" and click "Next". Optionally

(if available), you can also select any other option you like.

Step 5: Now make sure your device is both OFF and PLUGGED IN to

the computer before you click "Next".

At this stage you will be presented with a screen where you will

have to quickly hold "Power" button and then while holding the

"Power" button, you will now have to hold "Home" button too. Now

after few seconds release "Power" button but keep holding "Home"

button until installation begins.

Step 6: Sit back and enjoy while redsn0w will do all the rest for

you. Once done, your iPhone or iPod touch will restart

automatically and you will find it jailbroken on the latest iOS

4.2.1 firmware.

Category:

Howto & Style

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[anhlet13]

my firmwire is not right???

[Bandicoot803]

@yotakeshi7 It worked without any flaws!

[Bandicoot803]

Perfect! Now I am free as a bird!!! Thx a lot, dude!

[KevinTheCruz]

ok i fixed it but the cydia isnt working

[KevinTheCruz]

i clicked cancel while it was rebooting and my ipod blacked out, it wont turn on or anything........ what should i do??????? help me please!!!!!

[Iphoneandipadapps123]

/watch?v=CCWoYoANPF4

easy jailbreaking tutorial

[guiterhero117]

Y u no use greenpois0n its SOOO much easier!

[Superwerss]

For a second my heart stopped! haha AWESOME JAILBREAK! THANKS!

[yotakeshi7]

does this even work?

[mintorrella5]

amazing video!!!!!!