I may be wrong but those who could do that recently please show up your hands and explain the methods.
Yeah I believe your right, I sure hope someone find a downgrade method, they be a serious hero in the iPad community!
I think if Dev Team won't create a Jailbreak for 4.0.2 and 3.2.2 , they must create a way to Downgrade the new devices for People that are purchasing with new firmware by default. If they hacked and found a way to install Cydia, I swear that hacking SHSHs Blops or Apple Signing Requests is easier than Jailbreaking.
Extratect from: Myth behind Downgrading iOS 4.0.2 to iOS 4.0.1 without SHSH Blob | MacHackPC
Well, it sounds very exciting when we here that it is possible to downgrade from iOS 4.0.2 to iOS 4.0.1 or iOS 4.0 without SHSH blob. Well, all my devices have SHSH Saved. So, it doesn’t make any sense testing it. Because, it will work anyway. So, in my yesterday’s tutorial (Mac / Win), I have mentioned that there is a possibility of downgrading your iOS 4.0.2 running devices to iOS 4.0.1 to iOS 4.0. Well, trying that method will not hurt becuase, anyway you are stuck with iOS 4.0.2 for now. If it works, you can go head and Jailbreak it. If not you can get to your previous state (iOS 4.0.2).
Semaphore, the man behind TinyUmbrella shared his though on Downgrading iOS 4.0.2 to iOS 4.0.1 / iOS 4.0 without SHSH Blob. Well, according to him it is not at all possible.. This is what he says..Let me get this out first.Well, if we keep all this a side, the only thing I can say is to, GIVE IT A TRY & SEE IF IT WORKS FOR YOU. BECAUSE, TRYING IT WILL NOT HURT YOU IN ANYWAY. But, please remember to post your outcome so that, it will help other users.
Let me start by explaining something very important. The buildmanifest is used by [COLOR=#0000FF ! important][COLOR=#0000FF ! important]iTunes[/COLOR][/COLOR] to build much of the TSS request that is used to obtain your SHSH for any given [COLOR=#0000FF ! important][COLOR=#0000FF ! important]firmware[/COLOR][/COLOR] revision. Unfortunately, the BuildNumber has no part to play in the request for SHSH. All that you ended up doing in following these directions is request 4.0.1 SHSH blobs. THAT IS ALL. Since every single one of you that got this to work changed your hosts file to point to Cydia, Cydia responded to the TSS request with an SHSH blob that was ALREADY “on-file”. There was no magic. There was no miracle, apart from the lucky break that your device had been put on Cydia’s SHSH request list at some time in the distant past.
- This is not a miracle, at least not in the sense you all hope for
- SHSHs are STILL required for any iPhone 4, iPhone 3GS, iPad, iPod Touch 3G, and iPod Touch 2G (MC Model)
- There is NO way around this… unfortunately this method included.
That’s it in a nutshell folks. There was no amazing technique for bypassing Apple’s TSS. There was no amazing exploit that exists in DFU mode allowing for 4.0.2 -> 4.0.1 downgrading. It’s simple; Cydia had your SHSH because at sometime in the past either:
- Someone saved your SHSH with that device using TinyUmbrella and the default options
- Someone restored that device with Cydia in the hosts pointing to gs.apple.com
- Someone jailbroke the device and pressed ‘Make my life easier’
Last edited by fenderprowler; 08-31-2010 at 08:36 PM.
Now we need the code for iPad to change.
i've tried a bunch of things the past few days. Tried saving an shsh 3.2.1 that I don't have (i just got my ipad a few days ago) to cydia like another thread talks about but that failed. But the thread referring to a downgrade from iphone 4.0.2 to 4.0.1 without shsh blobs got me the closest. I downloaded firmwares 3.2, 3.2.1, and 3.2.2. I modified 3.2.1 plist files and renamed dmg files. I saved shsh 3.2.2 to cydia, modified host files and i came back with error 3005 or 11. does anyone know of a way to bypass either of these errors in itunes? if so... i may have found a way to downgrade 3.2.2 to 3.2.1 without shsh blobs.
as a side note, i can't seem to get tiny umbrella 4.02.04 or 4.02.05 to run on my mbp core duo, or my powermac g5. I had to run it on a (bleh) windoze computer in order to save my shsh to cydia. anyone experiencing tiny umbrella problems similar to mine?
Last edited by cmstuber; 09-06-2010 at 12:08 AM.
no one knows how to bypass 3005?
@fenderprowler why would you want to replace with 3.2.2 files? i tried this of course, but all that it will do is install 3.2.2 again.
as for tinyumbrella. notice i said 4.02.04 & 4.02.05 don't work. just tried the 'newly recompiled' and still, not working on both my mbp and pmg5. if you are running it, how?