Step 1

Download the required stuff:

• Download iOS 4.1
• Download Greepois0n

Step 2

iPhone 4: If you don’t need to unlock iPhone, simply update to iOS 4.1 via iTunes. But If you depend on unlock, follow the guide linked below to update your iPhone 4 to iOS 4.1 without upgrading its baseband:

How to Update iPhone 4 to iOS 4.1 without updating baseband

iPhone 3GS: If you don’t need to unlock iPhone 3GS, simply update to iOS 4.1 via iTunes. But If you depend on unlock, AVOID iOS 4.1, Greepois0n, Limera1n and wait for the PwnageTool to come out (hopefully within a week.)

Step 3

Connect your iPhone 4 / 3GS to your computer and turn it off.

Step 4

Now execute the downloaded Greenpois0n jailbreak (from step 1).

Step 5

Now hit the “Prepare to Jailbreak (DFU)” button on the Greepois0n and follow the on screen instructions to put your iPhone 4 / 3GS into DFU mode.

* If you find on screen instructions difficult to follow, we have an easy guide to: put iPhone into DFU Mode.
* If you think your device is in DFU mode but Greenpois0n is not detecting it, hit the “Prepare to Jailbreak (DFU)” button again.

Step 6

Once you’re into DFU mode, Greepois0n will tell you that your device is ready to jailbreak.

Hit the “Jailbreak!” button and Greenpois0n will start jailbreaking your iPhone 4 or iPhone 3GS.

Step 7

Once the process is successfully completed, Quit button will appear on Greenpois0n window.

That’s it. Check for the Cydia icon on your iPhone home screen. Have fun with your jailbroken iPhone 4/3GS on iOS 4.1

via iphoneheat

Sherif Hashim has discovered another exploitable iPhone baseband crash which could bring an unlock for iOS 4.1 and iOS 4.2.

@sherif_hashim: since nearly all my received tweets ask about both BB, I can report very early “initial” 1st step success on both sides, calmed down?

@mrpauldurden: @sherif_hashim very early first steps means.. you’ve found a crash that can potentially prove to be an expoitable vulnerability?

@sherif_hashim: @mrpauldurden a bit more sure than this, yeah

Hashim previously found a baseband crash in iOS 4.0 that was instrumental in bringing the unlock for devices on that firmware.

Veeence suggests that the unlock won’t be released till iOS 4.2; however, it will still support iOS 4.1.

@veeence: A new exploitable baseband crash has been found. An unlock will very likely be released after iOS 4.2 and will unlock both BB’s of 4.1 & 4.2

We’ll bring you more information as it becomes available.

via iclarified.com

Geohot Releases Limera1n, Jailbreak Most iOS Devices

Geohot has released Limera1n, his tool to jailbreak all i-devices on the latest Apple iOS 4.1 firmware. There has been a lot of drama with the release as Geohot stole comex’s untethered exploit and used it on his own tool. The dev team warns that the jailbreak may be unstable and could cause problems as the tool uses a beta version of comex’s untethered exploit. Use at your own risk, UNLOCKERS STAY AWAY or you could possibly lose your iphone unlock forever. Wait until the dev team releases their jailbreak tool.

Download Limera1n HERE

Limera1n Details:
● Jailbreak iPhone 3GS, iPod Touch 3G, iPad, iPhone 4, iPod Touch 4G
● 3GS new bootrom is broken, fix pending
● 4.0-4.1 and beyond+++

There is too much to keep up with as twitter is blowing up with vulgar statements and comments between jailbreak teams. To stay up to date with all thats going on you can check out the following twitters:

• Pod2G http://twitter.com/#!/pod2g
• Chronic Dev http://twitter.com/#!/chronicdevteam
• PosixNinja http://twitter.com/#!/p0sixninja
• Comex http://twitter.com/#!/comex
• Chpwn http://twitter.com/#!/chpwn