These are instructions on how to downgrade your iPhone firmware using TinyUmbrella. In order to follow this tutorial you must already have saved your SHSH Blobs for the firmware you want to restore to.
You can use this tutorial to downgrade to iOS 4.3.3 in order to jailbreak using JailbreakMe. The Mac version of this tutorial is here.
Step One
Download TinyUmbrella from here and save it in a Pwnage folder on your desktop if don't have it already.
Step Two
Download the firmware you want to restore to from here and save it in a Pwnage folder on your desktop. Remember you must have saved your SHSH Blobs for this firmware already.
Step Three
Launch TinyUmbrella by double clicking its icon.
Step Four
Connect your device and make sure it lists saved SHSH Blobs for the firmware you are restoring to. You may need to click Save SHSH to restore your blobs from Cydia if you don't see any listed.
Step Five
Click the Start TSS Server button.
*Do not continue if TinyUmbrella's TSS server is not started successfully.
Step Six
Launch iTunes by clicking its icon in your Start Menu.
Step Seven
Place your iPhone into DFU mode by holding down the Power and Home buttons for 10 seconds then release the Power button and continue holding the Home button for another 10 seconds.
You can find help with DFU mode here.
Step Seven
Select your iPhone from the list of devices on the left, hold down the Shift key and click Restore.
Step Eight
Navigate to the Pwnage folder on your desktop, select the ipsw file you downloaded and click the Open button.
Step Nine
iTunes will now restore to the lower firmware version.
You can use this tutorial to downgrade to iOS 4.3.3 in order to jailbreak using JailbreakMe. The Mac version of this tutorial is here.
Step One
Download TinyUmbrella from here and save it in a Pwnage folder on your desktop if don't have it already.
Step Two
Download the firmware you want to restore to from here and save it in a Pwnage folder on your desktop. Remember you must have saved your SHSH Blobs for this firmware already.
Step Three
Launch TinyUmbrella by double clicking its icon.
Step Four
Connect your device and make sure it lists saved SHSH Blobs for the firmware you are restoring to. You may need to click Save SHSH to restore your blobs from Cydia if you don't see any listed.
Step Five
Click the Start TSS Server button.
*Do not continue if TinyUmbrella's TSS server is not started successfully.
Step Six
Launch iTunes by clicking its icon in your Start Menu.
Step Seven
Place your iPhone into DFU mode by holding down the Power and Home buttons for 10 seconds then release the Power button and continue holding the Home button for another 10 seconds.
You can find help with DFU mode here.
Step Seven
Select your iPhone from the list of devices on the left, hold down the Shift key and click Restore.
Step Eight
Navigate to the Pwnage folder on your desktop, select the ipsw file you downloaded and click the Open button.
Step Nine
iTunes will now restore to the lower firmware version.