Update 11 : Limera1n for Mac released, thanks everyone for the emails

Update 10 : Limera1n out of beta, final release download Limera1n Final release

Update 9 : Geohot's limesn0w unlock video fake or real ?

Update 8 : Geohot announces Mac Limera1n coming tomrrow

Update 7 : Musclenerd announces shatter will be held back, greenpois0n delay ?

Update 6 : Dev team addresses the release of Limera1n read below

Update 5 : Beta 3 just released, now supports 3GS new bootrom

Update 4 : Check out our video guide below (limera1n in action)

Update 3 : Don't run it two times in a row you will lose some icons. 

Update 2 : Supports ALL iPod 3G/4G iPhone 4/3GS & iPad devices, Tested using latest iTunes

Update: looks like Geohot wants to piss of some people and make alot of new friends. He announced the jailbreak coming monday but just released the beta right now !!! Only windows support at this time.

Howto Jailbreak Guide using Limera1n or Limerain :P We could tell you about it but we'll just show you using the video below. This will work for 4.0 4.0.1 4.0.2 4.1 on iPhone 4, iPhone 3GS, iPod Touch 3G, iPod Touch 4G & iPad on 3.2.2.

Download Links

- Limera1n Final

- Limera1n RC4 (uninstall fixed, respring fixedish)

- Limera1n RC3 (fixed new bootrom 3GS)

- Limera1n RC2 (fixed kernel patching magic, rerun BETA2+ over BETA1)

www.limera1n.com

Here is the text Guide if you don't like the video

Step 1: Download LimeRa1n from limera1n.com

Step 2: Plug your iPhone in and launch LimeRa1n then click "Make it Ra1n”.

Step 3: Follow the onscreen instructions: hold the Home and Power button together.

Step 4: Release the Power button.

Step 6: LimeRa1n will have your iPhone enter DFU mode and will then work its jailbreak magic.

Step 7: Your iPhone is almost jailbroken and you should see the following messages.

Step 8: If you don’t see the LimeRa1n icon on your iPhone, simply reboot it, then launch LimeRa1n on your iPhone and select Cydia to install.

Step 9: Once Cydia is installed, you can uninstall LimeRa1n from the LimeRa1n app on your iPhone.

Let us know how it goes for you.

[Thanks Whammy!]

Dev Team response

After a few very dramatic days in the jailbreak community, geohot has come out of nowhere to release limera1n.  It’s a bootrom-level jailbreak that works on the iPhone3GS, iPhone4, iPod touch 3G, iPod touch 4G, the iPad, and (technically) the AppleTV 2G.

DO NOT USE LIMERA1N IF YOU USE THE ULTRASN0W CARRIER UNLOCK — wait for PwnageTool to incorporate the limera1n exploit.  This is so that you can avoid updating your baseband and losing the unlock (possibly forever).

Limera1n uses a different exploit than SHAtter, and in fact covers more devices.  Although some may question geohot’s dramatic and competitive style, he obviously does have considerable skill pulling this together in just over a day (although he’s had the underlying exploit for months).  Credit also goes to @comex, who provides the untethered aspect of limera1n via another one of his growing list of kernel hacks.

The release of limera1n has (hopefully!) averted the burning of 2 bootrom holes at once (both his and SHAtter).  Releasing SHAtter now would be a complete waste of a perfectly good bootrom hole in light of limera1n, and so it can be held until Apple closes limera1n’s hole.  While there’s no guarantee that Apple won’t also close SHAtter by then, it provides a ray of hope for devices after Apple’s bootrom respin.  Meanwhile, look for alternate implementations of the limera1n exploit in greenpois0n and possibly other tools too.

Limera1n does have some issues, and geohot typically works these out in subsequent (and rapid) releases.  In the meantime, feel free to discuss any problems and their solutions in our comments section.