How to Downgrade Your iPhone Firmware Using TinyUmbrella (Windows)

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 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.


Step Ten
If you happen to get an Error 1 or you get stuck in recovery mode, you will need to use FixRecovery to get your device out of recovery mode.


Download FixRecovery from here and save it to the Pwnage folder on your desktop. Then extract the archive.


Download zlib1.dll from here and save it to the Pwnage folder on your desktop. Then extract the archive.


Step Eleven
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 Twelve
Double click to launch the fixrecovery43 executable we just extracted.


Step Thirteen
FixRecovery will perform its magic after which your device will be successfully rebooted.





IMPORTANT:
● If fixrecovery does not work the first time you may need to rerestore to your desired firmware version and try again. Remember to keep the TSS Server running during your second restore as well.
● This tutorial does work to get your from iOS 5 beta back down to iOS 4. Although some have reported less issues with a lower version of iTunes this tutorial was tested to work with iTunes 10.5.0.77.

How to Downgrade Your iPhone Firmware Using TinyUmbrella (Mac)

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 Windows version of this tutorial is here.

Step One
Download and install TinyUmbrella from here if you haven't already.


Step Two
Download the firmware you want to restore 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 from your Applications folder.


Step Four
Connect your device and make sure it lists saved SHSH Blobs for the firmware you are restoring to. If you don't see any blobs you may need click the Save SHSH button to load them from Cydia.


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 the dock.


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 Option 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.


Step Ten
If you happen to get an Error 1 or you get stuck in recovery mode, you will need to use FixRecovery to get your device out of recovery mode.


Download FixRecovery from here and save it to the Pwnage folder on your desktop. Double click to extract the archive.


Step Eleven
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 Twelve
Double click to launch the fixrecovery43 executable from the fixrecovery-osx folder we just extracted.


Step Thirteen
FixRecovery will perform its magic after which your device will be successfully rebooted.





IMPORTANT:
● If fixrecovery does not work the first time you may need to rerestore to your desired firmware version and try again. Remember to keep the TSS Server running during your second restore as well.
● This tutorial does work to get your from iOS 5 beta back down to iOS 4. Although some have reported less issues with a lower version of iTunes this tutorial was tested to work with iTunes 10.5b77.

How to Update Your iPhone 4 Without Upgrading the Baseband (Mac) [4.3.1]

This tutorial will show you how to upgrade your iPhone 4 to iOS 4.3.1 without upgrading its baseband using TinyUmbrella for Mac.

Please Note: This ONLY Works with the iPhone 4!

Step One
Download TinyUmbrella from here. Also make sure to download the iPhone 4 iOS 4.3.1 firmware which you can find here.


Step Two
Double click the downloaded TinyUmbrella pkg file to and follow the prompts to install the application.






Step Three
Double click to launch TinyUmbrella from your Applications folder.


Step Four
Make sure the device is connected, and Umbrella has detected the type of device and its firmware.


**If you haven't already saved your iOS 4.3.1 SHSH blobs then click Save SHSH. Make sure they successfully save before continuing.

Step Five
Hit Start TSS Server and make sure you receive no errors.


Once The TSS Server is "running" successfully, umbrella will kill iTunes. Leave TinyUmbrella Open.

If you do receive an error, DO NOT continue. Your restore will not work if the TSS server cannot be started.

Step Six
Open iTunes by doubling clicking its icon in the dock.


Hold down the Option key and click Restore


Select your iPhone 4.3.1 firmware file from the popup window that appears and click Open.


Click Restore to begin restoring your device.


Step Seven
iTunes should give you error 1013. This is what we wanted, as it notes the baseband has not updated :) ClickOk and close iTunes.

If you get a 16XX error then try entering DFU and go to step 5.
If your restore does NOT end in a 1013, it means your baseband was updated. This is likely because you did not have the TSS server running OR you updated without TinyUmbrella OR you are working with a device OTHER than iPhone 4.

Step Eight
Fix Recovery in TinyUmbrella is currently not working for the latest firmware versions. Download the standalone Fix Recovery to kick your device out of recovery mode on 4.3.1 from here

Extract the file by double clicking on the downloaded archive.


Double click the fixrecovery43 program from within the folder we just extracted. During this process you will notice scrolling text on your iPhone 4.


Step Nine
Your iPhone will now be on 4.3.1 without having upgraded the baseband! If you have the 1.59.00 baseband you can now unlock using this tutorial).


**Thanks to semaphore for his work on this tool