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The inevitable window has finally closed. Apple has officially ended the signing period for downgrading back to iOS 5.0.1 for all iDevices. A5 devices are now immovable from iOS 5.1...
03-09-2012, 09:58 AM #1
Apple No Longer Signing iOS 5.0.1
The inevitable window has finally closed. Apple has officially ended the signing period for downgrading back to iOS 5.0.1 for all iDevices. A5 devices are now immovable from iOS 5.1 if they have been updated until a solution for downgrading can be found. SHSH blobs will not do you any good for downgrading an A5 device at this time.
A4 devices on the other hand, which support iOS 5.0.1 firmware, can be downgraded only if you have a custom firmware, which has been signed by iFaith or stitched by redsn0w using your APTickets. These firmwares will still downgrade A4 devices because A4 devices contain a bootrom exploit known as limera1n. This is the big difference that sets A4 devices apart from A5 devices as A5 devices do not have a bootrom exploit at this time.
A5 devices updated to iOS 5.1 do not have an untethered nor tethered jailbreak, meaning if you’re at iOS 5.1 then you are now jailbreakless until a new jailbreak is created for iOS 5.1. A4 devices have the choice to either downgrade back to iOS 5.0.1 or have a tethered jailbreak on iOS 5.1 with the latest redsn0w (0.9.10b6), which was released yesterday. I wouldn’t recommend the tethered jailbreak on iOS 5.1 because many tweaks and Cydia packages are not compatible nor programmed to work with iOS 5.1 yet.
If you have an A5 device currently jailbroken on iOS 5.0.1, this is your only prerequisite: be very careful what you install on it. If anything goes wrong, forcing you to restore, you will not be able to get back on iOS 5.0.1.
Thanks for the tip mofodox.
Last edited by Anthony Bouchard; 03-09-2012 at 10:01 AM.
The Following User Says Thank You to Anthony Bouchard For This Useful Post:
03-09-2012, 10:06 AM #2
Good write up dude, spelled out plainly. We await the inevitable numptys that did not read it properly asking if they can still downgrade after accidentally upgrading to 5.1 !
03-09-2012, 10:16 AM #3
Thanx for the update bud.
03-09-2012, 10:17 AM #4
Only issue with this post is that u say u recommend the tethered jailbreak because many things arent compatible I think u meant u recommend the untethered jailbreak lol
Nvm re read it and I'm an idiot lol u said wouldn't recommend
03-09-2012, 10:27 AM #5
I accidentally downgraded my 4s to 5.01 how can I upgrade to 5.1?
03-09-2012, 10:28 AM #6
Here we go DEV Team, here we go!!!
03-09-2012, 10:33 AM #7
So far the A5 has caused its fair share of problems as it does seem to be more resilient to exploits.. looking at the time line of 5.0.1 JB, i think its just going to get tougher and thus will take longer for jailbreaks betweens ios revisions... Still hoping for the best and letting the pro's do their thing.
03-09-2012, 11:23 AM #8
Well this sucks. I was planning on restoring my 4s to 5.0.1 today because it's been having issues....
03-09-2012, 11:27 AM #9
all i want is my 4S with pdanet on 5.1
03-09-2012, 11:44 AM #10
03-09-2012, 12:03 PM #11
Is there a way to preserve your baseband (1.59.00) on a 4 to get it on 5.1? Only reason I ask is because I was updating phones yesterday to 5.0.1 and many went well but last night I did on more and got 3194 so I assumed the window closed, so I left it on 4.0 and used jailbreakme 3.0 but cydia was blank so I did a hard reset and it is now stuck on the apple logo
03-09-2012, 12:09 PM #12
03-09-2012, 12:25 PM #13
Apple, stop being such a55es.
03-09-2012, 12:35 PM #14
Saved mine yesterday!HIT THANKS BUTTON TO SHOW YOUR APPRECIATION
03-09-2012, 12:56 PM #15
is it possible to restore a 4s on 5.0.1 to 5.0.1 again? i have shsh blobs stored...
03-09-2012, 12:56 PM #16
Well if anyone cares of gets the same issue heres all I did (since booting tethered, and restoring to any firmware sn0wbreeze or not gave itunes errors):
-Used iFaith to dump the 4.0 blobs
-Created IPSW with iFaith of 4.0
-Restored with this IPSW and now the iphone boots again
So if anyone gets at suck at apple logo who tried restoring to custom 5.0.1 try that method
03-09-2012, 12:57 PM #17
03-09-2012, 01:13 PM #18
03-09-2012, 01:34 PM #19
03-09-2012, 01:42 PM #20
I updated to 5.1 on my iPhone 4 it says I have the shsh blob for 5.01 on top of cydia, will I be able to get that using ifaith so i can downgrade to 5.01 please help. Or did I need to save the shsh blobs myself am I stuck of what any help thanks