How to Jailbreak iOS 4.2.1 on: iPhone 3G, 3GS, 4, iPod Touch 2G, 3G, 4G, and iPad. *TETHERED!*

I have tested this on an:
iPhone 3G
iPhone 4
iPhone 3Gs
iPad WiFi
iPod Touch 2G
Credits to the Dev Team for making time to make such a wonderful tool. :)
Visit http://www.SyncTehk.com for all of your jailbreaking needs!
This jailbreak is tethered, meaning that if you power it off, Safari and Cydia WILL NOT work unless you plug it into your computer and run RedSn0w again.

Links:

-IPSW FILE:
Find the name of your device, and download the 4.2.1 FILE. NOT 4.1 OR BELOW.

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

-RedSn0w:

Windows:

http://tgq.nl/redsn0w_win_0.9.6b4.zip

Mac:

http://tgq.nl/redsn0w_win_0.9.6b4.zip

When you are done jailbreaking, run RedSn0w again and unselect Cydia. Then, select "Just boot tethered right now" option.

ATTEMPT AT YOUR OWN RISK! SyncTehk and I are NOT responsible for ANY physical, colateral, internal, external, mental or emotional damage caused to your iDevice or you through this process (Not likely to happen, but still).

Category:

Howto & Style

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[Danielmyburgh1]

Great Video thanks, how would i install Winterboard

[HefferHefferHeffer]

@Danielmyburgh1 Go to Cydia, and search for it. It'll be there. It'll ask you to reboot. Plug in your iDevice, and run RedSn0w again.

[Danielmyburgh1]

@HefferHefferHeffer Whenever im trying to apply a keyboard theme, i apply it in Winterboard and then respring and nothing happens, do u know how to fix it