how to jailbreak iphone 3gs version 4.2.1?

Question

i have recently updated my iphone 3gs to version 4.2.1 and now i wanna jailbreak it. i am ok on computers but all i need is someone to tell me step by step what i have to do to jailbreak it and not lose everything on my phone if something were to go wrong. i don't trust myself to do it alone so that is why i am asking you guys here because i know you guys out there know more then me lol. i know i have to use redsnow ( i think ) to jailbreak it but what i do with it. thank you in advance to everyone who will read this and help me. remember i need step by step instructions lol.

Answer 1

try this smart jailbreak tool for 4.2.1.

http://www.adiguo.com/how-to-unlock-iphone.html

Answer 2

There is a jailbreak out now by using redsn0w but it may be a tethered jailbreak which means you have to connect your device to a computer and run redsn0w everytime you have to reboot your device. It depends if your 3GS is an old or new bootrom.

The instructions with a video are here:

www.idevicenews.co.uk/readmore-19.html

Keep checking this site for the latest updates on jailbreaking and unlocks. A new jailbreak/unlock is expected to be released before xmas.

It also gives you everything you need including jailbreaks, unlocks, installous, firmwares etc etc

Hope that helps.

www.idevicenews.co.uk

Answer 3

they are reporting that due some bugs and unpredicted variations, they plan to launch their strategies in stages and characteristic began off via liberating PwnageTool for Mac OS X to jailbreak iPhone OS 3.0. whilst Apple introduced that iPhone OS 3.0 would be released on June 17 at WWDC 2009 Keynote handle, all people who had jailbroken their iPhone the two to place in jailbreak apps or to unencumber their iPhone have been eagerly waiting to correctly known if the iPhone Dev team will launch as much as date a thank you to jailbreak iPhone OS 3.0 and yellowsn0w to unencumber iPhone OS 3.0? They plan to launch QuickPwn for Mac OS X and homestead windows quickly.

Answer 4

Good day Sir/Madam:

It is always wise to back up your device with iTunes first before jailbreaking. Or you may lose important information during jailbreaking.



Wish that helps

Answer 5

To jailbreak the iphone 3GS on 4.2.1, follow this:



http://www.redmondpie.com/jailbreak-ios-4.2.1-iphone-4-3gs-3g-ipad-ipod-touch-with-redsn0w-0.9.6b4-guide/



However, if you need to unlock, that's a whole different story. You have to flash an iPad baseband which completely voids warranty, and there's no turning back once done. I did it fine with my beat up 3G 8GB. So if that's the case, disregard that link above, and follow this one:



http://www.techsliver.com/pc-users-unlock-guide-iphone-3gs-3g-redsn0w-096b5/



Both are about the same difficulty.

Answer 6

i tried for hours. ios4 is a *****