After 10 seconds, release the Power button but keep holding the Home button until iREB detects your iDevice in DFU mode.
Sn0wbreeze tool which will then allow you to create custom signed ipsw for your iDevice.
Now use the following instructions to put your iPhone in DFU mode: Turn off your iPhone completely, press and hold the, home Power button simultaneously for 10 seconds.
Now wait while TinyUmbrella saves your shsh from Cydia server to your hard-disk drive locally.According to iH8sn0w, he will be integrate this feature in his.Once restored, your iDevice will restart automatically.If you ever restored a stock or custom ipsw of any firmware on your iDevice and forgot to save shsh blobs using TinyUmbrella, you can still save using iFaith.Download iOS.1 for iPhone 4/3GS/3G iPod Touch 4G/3G/2G.Whole process takes 5-10 mins max.In order to downgrade firmware of your iDevice, all you need is shsh blobs for the firmware to which you want to downgrade.If you still haven't saved.iFaith file, first select, show Available shsh Caches on Server option to save the shsh blob file locally on your hard-disk drive.Now you can create signed ipsw for your iDevice using iH8sn0w's iFaith tool (aka, sHSH Dumper ).Now wait while iFaith verify and cook signed ipsw for your iDevice.Redsn0w, GreenPois0n, Limera1n, JailbreakMe or, spirit.Stuck in Recovery Mode After Downgrade?Launch TinyUmbrella and wait while it detects your iDevice.La première chose à faire est de forcer l'arrêt de l'application en appuyant pendant 6 secondes sur splinter cell blacklist 100 save game le bouton Home.Download iOS.2.1 for iPhone 4/3GS/3G, iPod Touch 4G/3G/2G iPad.Click on the respective links to solve the following errors which you can encounter during the downgrade process: You may also like to read: Contact Us for News Tips, Corrections and Feedback.If you are creating signed ipsw of any other firmware, please choose the stock ipsw file respective to the shsh blobs you saved in step.

After saving all of your shsh blobs to your PC or Mac, leave TinyUmbrella window open in background.
Launch iTunes.2.1 Select your device name from the side-panel to view the summary page.