Dev Team Updates Redsn0w; Adds Native Support For iOS 5.0.1, Fixes iBooks Issue And Lots More [Updated]

Jailbreak iPod Touch On iOS 4.2.1 Redsn0w

As promised, iPhone Dev team has released a new version of Redsn0w – a popular jailbreaking tool, which brings native support for iOS 5.0.1, fixes the iBooks issue in iOS 5 and iOS 5.0.1 and lots more.

Redsn0w 0.9.9b9b will also allow users to downgrade using iOS 5.x. SHS blobs.

Dev team have provided the following details on their blog:

The holiday season is almost here (Happy Holidays!) so we realize everyone is busy (especially @pod2g!).  And even though we always recommend that jailbreakers stay where they are until a new untethered JB comes out, that’s not always possible.  So we’ve updated redsn0w for those who may have found themselves at iOS 5.0.1, and added some other useful features too:

  • native support for 5.0.1 (no need to point redsn0w at 5.0 IPSW or use command-line args).  Support automatically extends to all of redsn0w’s various functions: “Jailbreak”, “Just boot”, “Fetch blobs”, “Stitch blobs”, “Recovery Fix”
  • iBooks fixed in 5.0 and 5.0.1.  This is a targeted fix that doesn’t remove entire sandbox mechanism.  5.x users already using redsn0w “Just Boot” can just use the new version without redoing entire jailbreak again
  • 3GS old-bootrom owners can now create custom IPSWs without blobs
  • ultrasn0w compatability update (i.e. same baseband requirements) for 5.0.1 will be available on Cydia Monday
  • support for newer 8GB iPhone4 (which until now had problems with “Fetch blobs”).  Thanks to @JKjeepnJeff for loaning us one of these newer i4 units for testing!
  • allows Windows users (not just OS X users) to use the “Custom” button to create IPSWs without baseband updates.  
  • accommodates APTickets in 5.x (until next Apple countermove).  APTickets are crypto-verified before submitting to Cydia, just like the main blobs.  Cydia server support for sending back the APTickets is upcoming.  For now, use stitched IPSWs for 5.x.  Due to APTickets, stitched 5.x IPSWs now require user to start in “Pwned DFU” mode
  • Support added for stitching 4.x blobs to iPad2-GSM IPSWs.  Similar to @notcom’s TinyCFW but doesn’t require lots of RAM or a TSS-assisted restore. Won’t work for iPad2 5.x blobs (or iPhone4S at all) until a bootrom-level exploit is out
  • top line now shows whether (and where) a redsn0w update is available, or if the version being run is the latest.  Uses DNS TXT record to alleviate any concerns about snooping
  • no 5.1 beta support at this time (major apps like Cydia are not yet compatible)
  • @pod2g has been doing a great job porting his 5.x untether…check his blog for updates!
  • Owners of newer 3GS iPhones must not flash the iPad baseband.  The iPad baseband will not work on 3GS iPhones built later than 2011 week 35.  You have a week 35 or later device if your serial # starts with xx135.

Redsn0w 0.9.9b9b supports the following iOS 5/iOS 5.0.1 devices:

Redsn0w 0.9.9b9b supports only a tethered jailbreak for iOS 5.0.1, except for iPhone 3GS with old bootrom which is untetherd. It doesn’t support iPad 2 and iPhone 4S. After you have jailbroken their iOS device, one can use the SemiTether hack, which allows users to reboot their tethered jailbroken iOS 5 device without the need to connect it to the computer.

We’ll update the our step-by-step guides to jailbreak iPhone, iPad and iPod touch running on iOS 5.0.1 with the latest version of Redsn0w shortly.

Update:

iPhone Dev team has updated Redsn0w again to fix some issues:

Update #17b: Version 0.9.9b9b enables the “Custom” button for Windows users, and make the 3GS week 35 warning a more explicit part of the process.
Update #17c: For those Windows users encountering launch errors due to the self-update check, please use this version instead for now.
Update #17d: iPhone3GS owners in our comments section below noticed a problem with the untethered jailbreak available for the old-bootrom 3GS. We’ve corrected that problem in 0.9.9b9d. If you have an old-bootrom 3GS and have already used last night’s redsn0w on it, you can re-run it again without losing anything. Just use this new version, go to Extras->IPSW and manually select the 5.0.1 IPSW, then go back and Jailbreak it again (but you can uncheck Cydia because it’s already installed).

You can download the latest version of Redsn0w using this link for Mac and this one for Windows.

Windows who are facing launch errors due to the self-update check, please download this version.

As always let us know how it goes in the comments.

[via Dev team’s blog]