Downgrade iOS 4.3.3 to 4.3.1 [iPhone 4, 3GS, iPod Touch]

[cavalierks]

iOS 4.3.3 is out with Location tracking bug fix. In case you have updated to iOS 4.3.3 and want to downgrade iOS 4.3.3 to 4.3.2 / 4.3.1 / 4.3 / 4.2.1 on iPhone 4, iPhone 3GS, iPad 2, iPad or iPod Touch, this guide is for you. These are the instructions to downgrade iOS 4.3.3 to 4.3.2, 4.3.1, 4.3, 4.2.1 using TinyUmbrella or by editing Hosts file.



NOTE: You must have SHSH blobs saved for the firmware you’re downgrading to, otherwise this won’t work. You can see for which firmware SHSH blobs are saved for your iDevice in Cydia.

*** You cannot downgrade iPhone Baseband, at least for now.
Downgrade iOS 4.3.3 to 4.3.2, 4.3.1, 4.3, 4.2.1

Download your desired firmware for which you’ve SHSH blobs saved and wanna downgrade to:
Download iOS 4.3.1 For IPhone 4

• iPhone3,1_4.3.1_8G4_Restore.ipsw

Download IOS 4.3.1 For IPhone 3GS

• iPhone2,1_4.3.1_8G4_Restore.ipsw

Download IOS 4.3.1 For IPod Touch 4G

• iPod4,1_4.3.1_8G4_Restore.ipsw

Download IOS 4.3.1 For IPod Touch 3G

• iPod3,1_4.3.1_8G4_Restore.ipsw

Method 1: Using TinyUmbrella

Download TinyUmbrella
If you’ve SHSH blobs saved on Saurik’s server via Cydia, download them into your computer first. To do that:
Connect your device, Fire up the TinyUmbrella
Select your device and hit the save SHSH button. that’s it.
Step 1 – DFU Mode

Put your iPhone, iPad or iPod Touch into DFU Mode (How to: enter DFU Mode)
Step 2 – Start TSS Server

Run the TinyUmbrella
Select your device from the left pane and make sure that downloaded SHSH blobs has been cached (right pane) by TinyUmbrella for iOS 4.3.2, iOS 4.3.1, 4.2.1, 4.1 or older.
Now hit the Start TSS Server button.
Step 3 – Restoring The Firmware

Open the iTunes
Hold down the Shift (Windows)/Alt (Mac) key and hit the Restore button.
Select the downloaded firmware (iOS 4.3.x, iOS 4.2.1, iOS 4.1 or older) and let the restore process complete.
iTunes should bring up the error 1015, 1013 or 1011 message. Don’t worry, it’s normal. You’ve successfully downgraded your iPhone/iPod Touch firmware.




Step 4 – for error 1015, 1013 or 1011 message (1013 its for my iphone 4) just jailbreak your iphone with redsn0w_win_0.9.6rc12

and it gameover