A few days ago Apple teleased iOS 4.1 beta.But we didn’t know how to downgrade iOS 4.1 to 4.0.1/4.0/3.1.x for iPhone 4, 3GS, 3G and iPod Touch.Here’s a complete guideline to downgrade iOS 4.1 to 4.0 / 3.1.3 / 3.1.2 on iPhone 4, 3GS, 3G and iPod Touch 3G, 2G.
Limera1n To Jailbreak iPhone 4, 3GS, iPad, iPod touch 4G on iOS 4.1 Released By GeoHot
iOS 4.1 beta is now available for download to developers. If you’ve already updated to iOS 4.1 to see if the Antenna issue has been fixed or to find out what’s new in iOS 4.1 beta but could not find it impressive or want to downgrade because Spirit jailbreak for iOS 4.0.1 or 4.0 will be out soon then this guide is for you.
In this guide we’ll use TinyUmbrella to downgrade iPhone / iPod Touch firmware. There’s no need to edit any Hosts file that is required in other guides found all over the cloud.
Keynote:
iPhone 4, iPhone 3GS, iPod Touch 3G and iPod Touch 2G (MC) users MUST have SHSH blobs saved for 4.0.1/4.0/3.1.3/3.1.2/older firmware in order to downgrade.
If you’ve SHSH blobs saved on Saurik’s servers via Cydia, download them into your computer first. To do that:
* Connect your device, Fire up the TinyUmbrella (Download Link below-Step 1) and Check mark the Advanced Options.
* Select your device, firmware (the one for which you’ve SHSH saved at Cydia; 4.0, 3.1.3 or older) and Cydia as Location.
* Hit the save My SHSH button. that’s it. (check: Where it saves SHSH)
(e.g: to download 3.1.3 SHSH blobs from Cydia see the screenshot below)
NOTE: If iPhone 4, 3GS, iPod Touch 3G and iPod Touch 2G (MC) users do NOT have SHSH blobs saved for an older firmware, they can NOT downgrade unless Apple is signing the Firmware.
Steps To Downgrade iOS 4.1 to OS 4.0.1/4.0/3.1.x firmware:
Step 1 – Required Stuff:
Download TinyUmbrella and firmware 4.0.1, 4.0, 3.1.3 or 3.1.2 for iPhone 4, 3GS, 3G, iPod Touch 3G, 2G from the links below:
* Download iOS 4.0.1
* Download iOS 4.0
* Download iOS 3.1.3
* Download OS 3.1.2
* Download TinyUmbrella (Needed for iPhone 3GS, iPod Touch 3G, 2G-MC only.)
Rest of the steps are exactly similar to the guide posted earlier. So, follow the guide linked below and continue from Step 2:
Steps to Downgrade iOS 4 to OS 3.1.3/3.1.2 for iPhone, iPod Touch
You could always get support from UnlockAlliPhone.com about any Unlock & JailBreak issue of any model of iPhone including iPhone 2G,3G & 3GS and also upcoming iPhone 4. They provide Premium Members Support for life time. Means just pay one time a small fee and you will receive support(real human support – avg response time 2 hour) for all present & future version of iPhone.
Thanks
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The best way to DOWNGRADE is Go to SETTINGS(on ipod) >General > Reset > Erase all data and content >Click ok. after the process is complete and the apple logo appears switch off the ipod manually by Holding the power and home button.
Then connect it to your pc or mac…and Click on restore(while holding the shift key)…and browse it to the .iwsp file you want to downgrade to…!!!!!
CHEERS..!!!!!
The best way to DOWNGRADE is Go to SETTINGS(on ipod) >General > Reset > Erase all data and content >Click ok. after the process is complete and the apple logo appears switch off the ipod manually by Holding the power and home button.
Then connect it to your pc or mac…and Click on restore(while holding the shift key)…and browse it to the .iwsp file you want to downgrade to…!!!!!
CHEERS..!!!!!
yeah sounds simple enough, but did not work! Try again!
yeah sounds simple enough, but did not work! Try again!
I guess I am not the only one with this big Q so an answer would be appreciated by many. I just want to unlock my 3GS (new bootrom and presently on iOS 4.1) downgrading it to any version of iOS4. It was never jailbroken and has no sh blobs saved so I have been unable to downgrade to 4.01 to get the jailbreakme.com unlock. But today with Limera1n beta 4 I jailbroke it so now I ask, can I now save my SH blobs on Cydia, and afterwards downgrade to 4.01 (editing the hosts file etc) in order to be able to (again) jailbreak AND unlock it?? I mean, are SHSH blobs firmware version specific or will the ones saved when on 4.1 firmware be useable for a downgrade to 4.01. Thanks…!
I used Jailbreakme 2 jailbreak mii iPod 2g before I upgraded…so I don’t have a blob or whatever.
that DID NOT work.
does the itunes version matter in downgrading? i can downgrade my iphone 3gs 4.1 to 4.0.1
does the itunes version matter in downgrading? i can downgrade my iphone 3gs 4.1 to 4.0.1
Ok ur all wrong but the guy who said cheers