UNTETHERED 4.2.1 Jailbreak Greenpois0n RC5 B4 How To Guide - iPhone , iPod Touch , iPad | Win & Mac

The untethered Jailbreak for 4.2.1 with Greenpois0n has been fixed with almost not flaw this time. The Jailbreak is as easy as it was before, maybe not as easy as Jailbreakme.com, but still, barely any work. Follow the instructions below.

1. Download Greenpois0n RC5 B4 for Windows or Mac from http://www.Greenpois0n.com
2. Restore your iDevice to 4.2.1 (if you need to preserve your baseband and you require and unlock DO THAT with TinyUmbrella)
3. Open up Greenpois0n
4. Connect your iDevice and make sure your computer recognizes it.
5. Go into DFU through Greenpois0n, follow the steps on screen.
6. After you are in DFU, hit "Jailbreak" on Greenpois0n
7. Your phone will do a bunch of crazy stuff, let it sit until it restarts and finishes.
8. Connect to Wifi
9. Open up your loader app, that you have now on your homescreen.
10. Download Cydia.
11. CONGRATZ!

Greenpois0n RC5 B4:
http://www.Greenpois0n.com
4.2.1 Firmware(for any reason you need it):
http://www.felixbruns.de/iPod/firmware/

Supported iDevices:

- iPod Touch 2G (all bootroms)
- iPod Touch 3G
- iPod Touch 4G
- iPad 1G
- iPhone 3Gs (all bootroms)
- iPhone 4
- iPhone 4 Verizon (_not_tested_)
- AppleTV 2

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[WksantosPH]

Really great!!! I hope more people like you do stuff like this that we can trust!!! Great stuff!!!

[paridys]

hey it keeps sayying try agin for me to brow is there like a newer version or what becuase its starting to piss me off pls reply ASAP! new to this jailbreaking shit and my homie has this to and his worked but it not working for me.

[OrbloxMovies]

@sT1ckF1guR3707 Yes They Do Save After Jailbreak

[mitchellbresnahan94]

once you download cydia can you download music and if you can what app do you download to get the music?

[sT1ckF1guR3707]

Do all your pics save after its jailbroken?

[chetsuecj]

cydia wont work?



[parker1560]

ive had it jailbroken before now i just figured y not lol so i did it again im on the ipod touch 3g mc model 

[letlovebreathe]

okay, the scrolling texts just froze and stopped almost midway through my iPod. what.

[TheSwaggerCat]

it says " Failed :(" also what when do i let go of the home button? do i do it as soon as the icon on my computer shows up? PLEAE HELp, i have been working 4 like 3hours trying to do this!

[mikexurules]

thanks this is like the only one that worked for me