iOS 4.3.3 was recently released by Apple for all the devices like iPhone, iPod Touch and iPad 2. Users who have updated to iOS 4.3.3 wants to downgrade to iOS 4.3.2 or lesser version then this is the following How To guide you need to go through on How to downgrade iOS 4.3.3 to iOS 4.3.2, iOS 4.3.1 or iOS 4.2.1

The downgrade will only work if you have SHSH blobs saved for older firmware’s. You can see for which firmware SHSH blobs are saved for your iDevice in Cydia. Also once your baseband is updated you won’t be able to downgrade your baseband only firmware can be downgraded.

How to Downgrade iOS 4.3.3 to 4.3.2, 4.3.1, 4.3, 4.2.1, 4.1

1. Make sure you Download iOS 4.3.2, iOS 4.3.1, iOS 4.3, iOS 4.2.1, iOS 4.1 & iOS 4.0.2 firmware files
2. Now connect your device to the computer
3. Turn off the device and following the instructions and put the device in DFU mode
4. Press on Home and Power Button for 10 Seconds
5. Now release the power button but hold on to home button for another 15 seconds.
6. Now iTunes will prompt your device is in recovery mode.
7. Point Apple server IP to Saurik server in hosts files and follow below instructions
   

   On Windows

   Navigate to C:WindowsSystem32driversetc and locate “hosts” file.

   On Max OS X

   Go to /etc folder

   Now Open hosts file in any text editor and add following line

   74.208.105.171 gs.apple.com

   After the above steps, save the hosts file.

8. After doing the above steps, restart iTunes and select the device and press ALT (On Windows)/ Option (On Mac) key board key and click on “Restore” button.
9. iTunes should prompt for the location of firmware file, locate the IPSW file and start the restore step
10. Please be patient and let iTunes complete the restore process
11. If you have followed the below steps properly, by now you should have iOS downgraded.