Redsn0w get update to fix “Restore failed” and iOS 5.1.1 tetherd jailbreak support
Starting with redsn0w version 0.9.11b2, those with newer devices (iPad2, iPad3, and iPhone4S) can join the downgrade with SHSH too!  In a radical departure from previous versions of redsn0w, it now directly supports restoring IPSWs to your device.

Redsn0w 0.9.11b4 – downgrade iPhone 4s , iPad 2 , iPad 3

Some important points:

  • The new feature is at Extras->Even More->Restore
  • You cannot downgrade without the personalized SHSH blobs for your device at that lower firmware.  You need to have fetched those blobs while the signing window was open, using either Cydia’s built-in TSS@Home feature, or with TinyUmbrella.  The new Restore screen of redsn0w lets you choose either the remote blobs or local ones (for the earlier firmware).  If you don’t know where TinyUmbrella put your blobs, TinyUmbrella has a button that will show you (copy them out of that folder and feed them to redsn0w).
  • The A5 downgrade method actually updates to the latest firmware before downgrading to the earlier one. This process updates your baseband to whatever is newest.DO NOT USE THIS METHOD IF YOU RELY ON UNOFFICIAL UNLOCKS of your iPhone4S.  Those who used the temporary SAM technique to unlock their iPhones to specific SIMs shouldn’t be affected by this baseband update.
  • This method can be fixed by Apple with a firmware update.  It’s a (pleasant) mystery why they haven’t fixed it yet, because reverse-engineering of the restore ramdisk indicates they do know about it.  It’s possibly too niche to bother to fix right now.
  • The least-tested devices with this method are the iPad2,3 and iPad3,2 (because we don’t have those models).  If you do and you feel like experimenting, please let us know how it turns out in the comment section below!
  • This update involves a bunch of new redsn0w code.  We recommend sticking to the previous version 0.9.10b8b unless you’re specifically using this new feature, until all the bugs are worked out!  (Note: If redsn0w gets stuck at the “Waiting for device” stage for more than 30 seconds, you’ve hit a pesky GUI bug…that will be fixed in an upcoming version!)

Update #b2: It support iOS 5.0.1 9A406 for iPhone4S

Update #b3: Version 0.9.11b3 should fix the spurious “Restore failed” messages people were sometimes getting, and it behaves better with nearby devices that have wifi syncing enabled!

Update #b4: Version 0.9.11b4 completes the tethered JB support for 5.1.1 on A4 devices and earlier, including proper “Stitching” and “Custom” creation of NO_BB IPSWs.

Here are the redns0w download links:

 

 

 

You can follow iPhoneRock on Twitter or join our Facebook fan page to keep updated on the latest jailbreak and unlock news.

2 Responses to “Redsn0w 0.9.11b4 – downgrade iPhone 4s , iPad 2 , iPad 3”

  1. [...] Continue reading here: Redsn0w 0.9.11b1 – downgrade iPhone 4s , iPad 2 , iPad 3 … [...]

Leave a Reply

Premium WordPress Themes