On June 10, 2011

It was only one day after iOS 5 beta version released to developers, MuscleNerd has been successfully jailbreak iOS 5 beta 1 using limera1n exploit with tethered boot.
Even iOS 5 status is beta software, many non-developers anxious to try out iOS 5. Yes, many of general iPhone Users (non-developers) have already installed iOS 5 by activating UDID for a few bucks fee, seeking free UDID activation online, or bypassing UDID activation by using VoiceOver trick.


And for those who have been installed iOS 5 into iPhone, iPod Touch, or iPad also wanted to jailbreak iOS 5.
About one hour ago, MuscleNerd released redsn0w 0.9.8b1 for mac via his twitter account @MuscleNerd.

@MuscleNerd: redsn0w jailbreak for iOS5 beta released: … Mac devs only (please don’t pirate Apple software!)

Today is the last day of WWDC 2011, it seems as good time as any to release tethered iOS5 jailbreak (for Mac owners with registered UDIDs), MuscleNerd said.

Download redsn0w 0.9.8b1 for Mac
Download redsn0w 0.9.8b1 for Windows

SHA1 Hash: b889e7fe768e6247e481207c35be6649f7869073
Size: 14334KB

Additional information from iPhone Dev-Team‘s blog:

UNLOCKERS AND THOSE PRESERVING THEIR UNLOCKABLE BASEBANDS SHOULD STAY FAR AWAY FROM THIS!  You will very likely lose your unlockable baseband if you try to install iOS 5.

THIS JAILBREAK IS INTENDED ONLY FOR DEVELOPERS OF JAILBROKEN APPS!  There are just too many broken components (Apple‚Äôs official apps, 3rd-party App Store apps, Cydia apps, MobileSubstrate apps, etc) for this to be useful to anyone but those truly looking to fix bugs in their iOS 5 jailbroken apps.  (Seriously!)

THIS REDSN0W WILL NOT HACKTIVATE 5.0b1!  You need to be an iOS developer with a registered UDID to get past all the new activation screens.  PLEASE DON‚ÄôT PIRATE APPLE SOFTWARE!  Only registered devs with Macs can develop iOS applications, and only those people will have legitimate access to the beta IPSWs.

THIS IS A TETHERED JAILBREAK ONLY!  No new exploits are being exposed with this jailbreak (it uses geohot‚Äôs limera1n bootrom exploit), but that comes at a cost.  You will need to use redsn0w to ‚ÄúJust boot tethered now‚Äù  to be able to use many things, including Cydia and Safari.  If you see a white icon for Cydia, or if Cydia or Safari crash when you open them, it‚Äôs because you didn‚Äôt boot tethered.

IF YOU HAVE THE 06.15 BASEBAND ON YOUR 3GS…this redsn0w will get you past the iTunes restore error you’ll get when using the stock IPSW (nobody other than those with the 06.15 baseband should be going anywhere near the stock IPSW!).

The way redsn0w works, you will very likely be able to use this on upcoming iOS5 betas, just by continuing to point redsn0w at the 5.0b1 IPSW.  So keep that IPSW handy!

Although most people just launch redsn0w by double-clicking it, remember there are “advanced” options available to those who invoke it from the Terminal shell: