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HOW TO - Downgrade your iPad1 or iPad2 to a 4.x firmware

Discussion in 'Jailbreaking & Hacking Tutorials & How-To Guides' started by f4780y, Apr 24, 2011.

  1. f4780y
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    f4780y Super Moderator Staff Member

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    Whether you are jailbroken or not, there are times when you may want to consider downgrading your iPad device to a previous version of the IOS firmware. Whatever the reasons, the process is simple provided you meet the following basic downgrade criteria:

    1. You MUST have saved SHSH Blobs for your device and the version of IOS you want to downgrade to. The http://www.ipadforums.net/ipad-hacking/59291-shsh-blobs-faq-new-improved-2012-a.html sticky is a good place to get information about this subject, but if you haven't taken steps to already save your blobs then chances are high that you will not have them available for a previous version of IOS.

    2. The version of IOS you want to install must have been released by Apple on your device - so for example, you cannot downgrade an iPad2 to 4.2.1 as this OS was never released by Apple for the iPad2.

    If you don't meet both these prerequisites, you are out of luck. There is no workaround, no hack, no solution. Sorry.

    ± This tutorial is confirmed working for all models of iPad1 and the WiFi only model for iPad2 provided you have the correct blobs saved and you are downgrading to a 4.x firmware ±

    If you are still reading and you meet the criteria, congratulations, you are just a few simple steps away from downgrading your iPad to a previous firmware. We are going to use TinyUmbrella as this is a simple and convenient method of enabling the downgrade. If you already have TU installed and your SHSH Blobs saved locally, skip straight to step 5. Otherwise your blobs must currently be saved on Cydia, in which case start at the beginning...

    iPad Downgrade Process
    1. Download TinyUmbrella from The Firmware Umbrella - TinyUmbrella for OSX or Windows, whichever is your chosen platform.
    2. Connect your iPad to your PC and run the TinyUmbrella program.
    3. Select your iPad under "Connected Devices" in the left hand pane.
    4. Press the "Save SHSH" button on the top right of the interface.

    Once completed, you should see a complete list of all your SHSH Blobs in the main panel. If the version of IOS you want to downgrade to is not in this list then you did not have SHSH Blobs saved as you expected and your downgrade journey is at an end, sorry. However, if the correct version is in the list we are good to go with the downgrade process.

    5. In TinyUmbrella, press the "Start TSS Server" button on the right. TU is now pretending to be the Apple Signing Server and will feed iTunes with your valid saved SHSH Blob when requested to do so later in this process.

    [​IMG]

    6. Next we need to download the IOS firmware file you want to downgrade to. Luckily we have a thread at IPF with links to Apple download servers for all firmware versions for iPad - http://www.ipadforums.net/ipad-hacking/24939-official-apple-ios-firmware-download-links-ipad.html

    7. You now need to get the device into Device Firmware Update (DFU) Mode. This is important. IOS cannot be downgraded unless the iPad is in DFU mode. Normal recovery mode will not cut it.

    In order to put your device into DFU mode you must press the "home" and "power" buttons together for EXACTLY 10 seconds at which point you must release "power" but continue to hold "home". After about 15 seconds, the device will enter DFU mode. There is no way to tell from the screen that this has happened as it will remain black. If you see the Apple logo you got the timing wrong. You can just try again until you get it right. It is perfectly normal for the iPad to reset at the 7 second mark. Do not be put off by this. The timing of your button release must be exactly 10 seconds. It is best not to even look at the screen as this will only put you off. You may like to try using your watch to get the timing precise.

    If everything went to plan, iTunes should now recognise a device in DFU mode and prompt you to restore it. It may take a few seconds for Windows to install DFU mode drivers if this is the first time you have used it. DO NOT interrupt the process. Otherwise iTunes will never recognise the device and you'll have to do a bit of maintenance in the control panel to get things working.

    8. Dismiss the dialogue box which iTunes presents telling you a connected device requires to be restored. We know this!
    9. Hold down the Shift key (Windows) or Option key (OSX) and click the "Restore" button with the mouse. This will tell iTunes that you already have a firmware file downloaded and want to select it for the restore.
    10. Navigate to the location of the downloaded firmware file from step 6 and select it.
    11. iTunes should now perform a normal restore of this firmware. It will verify your entitlement to install the file not with Apple servers but through TinyUmbrella. Provided you have the right SHSH Blobs in TU for the firmware file you selected to install, the restore process will start.

    If you have a wifi only iPad the restore should now complete as expected. Congratulations, you have successfully downgraded your iPad! - You can now skip ahead to the "Tidying Up" section at the end.

    However, if you have a 3G device there will be an added complication. The downgrade WILL FAIL likely with an iTunes error 1015 or similar..., however DONT PANIC! This is exactly what we expect. Your 3G iPad has a baseband (modem) firmware just like the iPhone. There is no way to downgrade the baseband on the iPad or iPhone, however that really doesn't matter to us. We actually want to have the latest baseband on our iPad as this keeps things working as planned. The good news is that the main IOS firmware has been completely downgraded, it's only the baseband downgrade which comes at the end of the process which has failed.

    So, all we have to do is kick our iPad out of the recovery mode loop it will now be in. This is easily achieved with our old friend TinyUmbrella.

    12. Using TinyUmbrella, select your connected iPad from the list and press the "Exit Recovery" button on the right and your iPad should now reboot into your downgraded firmware.

    If the "Exit Recovery" button is not available, OR it fails to work, you need to put your iPad back into DFU mode and then use the "Fix Recovery" button in TinyUmbrella. Once recovery has been fixed, you may need to skip back to step 12 again to finally kick it out of recovery mode.

    Remember also, at the end of a successful firmware installation, you will expect to see the "connect to iTunes cable" graphic on the iPad. This is normal. It happened when you first took your iPad out of the box. Your iPad must be connected to iTunes to successfully activate when it has a fresh firmware installed on it. Don't get fooled into thinking you are stuck in a recovery loop. You are only stuck in recovery if iTunes says you are, so start iTunes and only go back to step 12 and try again if it detects a device in recovery.

    Tidying Up
    TinyUmbrella ships with a default setting which can cause problems for some users. Switch to the advanced tab on TU and you will see a setting named "Set Hosts to Cydia on Exit (if you need a clean restore from Apple uncheck this box)
    In general, most users now prefer this to be UNTICKED. Doing so means that next time you try and upgrade your iPad to the latest firmware it will succeed rather than throwing an error in iTunes which will happen if you leave it ticked.
    Untick the setting and close TinyUmbrella.

    You're all done! Enjoy your downgraded iPad...
    Last edited: Apr 1, 2012
  2. Retiredjack
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    Retiredjack iPF Novice

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    Thank you for the great post, all your stickies are a great source of knowledge.

    Here is my question:
    Is there a way to run tinyumbrella (4.32.01) without an internet connection to a windows vista computer?

    When I try it a small black window appears briefly then nothing happens, here is the content of the umbrella.log:

    Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: com/intellij/uiDesigner/core/Spacer
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at com.semaphore.TinyLoader.loadTiny(TinyLoader.java:250)
    at com.semaphore.TinyLoader.access$000(TinyLoader.java:27)
    at com.semaphore.TinyLoader$1.run(TinyLoader.java:40)
    at java.awt.event.InvocationEvent.dispatch(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.run(Unknown Source)

    I was able to do the upgrade/jailbreak from 4.2.1 to 4.3.1 using a tethered MYWI connection to a 3G network since iTunes only requires the internet connection at the beginning of the of the process to validate the firmware signature, but if I have the downgrade the firmware because of a bad upgrade and the iPad is either not operational or not jailbroken how do I start the TSS Server? BTW the reason I do not have an internet connection is because I live full time in my RV and the jailbroken iPad with MYWI is a much more attractive solution than a satellite dish.

    Thanks again for all your (and other members of the forum) helpful and sometimes humorous responses.
  3. f4780y
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    f4780y Super Moderator Staff Member

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    Thanks for the feedback. Do you know, I've never noticed it doesn't work without an Internet conection... Guess I am always online when I use TU! I'll look into it and get back to you if I can find any details.

    UPDATE - Well can't seem to find any way around it. Are you never online? Looks like you only need to get TU running, but once it is loaded you can cut the internet connection. So, if you can tether your laptop even for a few minutes to get TU loaded, you should then be fine... That's all I can think of.
    Last edited: Apr 27, 2011
  4. Renzo
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    Renzo iPF Novice

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    So if i understand this

    The shsh is just to be able to downgrade it is not an IOS right?

    So Exemple I want to downgrade to ipad 4.3.1 jailbreak and I have the shsh saved for it. I still need to download official Ios 4.3.1 for Ipad from apple?

    thanks
  5. f4780y
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    f4780y Super Moderator Staff Member

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    Yes. SHSH is just a signature. It is tiny. You must still have the iOS file. We have a sticky in the hacking section where you can download them all straight from Apple.
  6. Renzo
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    Renzo iPF Novice

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    Yeah i saw the sticky thanks

    This must be why when I downgraded my apple TV and just did the normal restore it went in Recovery I had to get the normal IOS lol

    Thanks :D
  7. redfoxman
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    redfoxman iPF Noob

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    fail to start

    Hello,

    I have a big problem.
    The ipad2 is in a restarting loop.
    that because after I uninstalling with cydia an application. A question appeared, but i didn't read.

    even from tyniumbrela is unvisible from my laptop. And the ipod is don't started anymore

    Can you help e pls.? have you any idea?
  8. redfoxman
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    redfoxman iPF Noob

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    Disregard,

    I just red your post about DFU mode. so it is solved.
    Thanks for your posts.
  9. sangweb
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    sangweb iPF Novice

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    Hi,
    Quick question, my wife accidently updated the ipad 1 to 4.3.4 and now all my JB apps are no longer working. I do have all the prerequisites to downgrade but my concern is the data, do I loose all my data and apps after I downgrade? What is the best way to downgrade without re-install all the apps, TIA.
  10. f4780y
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    f4780y Super Moderator Staff Member

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    In your situation you unfortunately will lose your jailbreak apps and settings because you did not back them up. In order to back them up you can use a solution like PkgBackup from Cydia, but you are too late now because you have gone up to 4.3.4 and now can't use JB Apps.

    However, you do still own all the Cydia apps you bought. So once you are jailbroken just log into the "My Account" section of Cydia and you can see all the paid apps you own and redownload them for free.

    Of course you can easily backup and restore all your App Store apps and settings. Just sync with iTunes, then when you are restored to 4.3.3 using your blobs, connect the iPad and choose to "restore from backup" and choose the backup you just made.

    Hope that helps.
  11. sangweb
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    sangweb iPF Novice

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    backup

    Is it possible that I sync with my iTunes first (4.3.4), then downgrade, after that restore from iTunes, will this restore all my JB or just Apple App?
  12. Mickey330
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    Mickey330 Administrator Staff Member

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    It'll only restore your Apple apps data. iTunes doesn't backup Cydia/jail break stuff.

    Which is why, for the future, it's best to do backups both in iTunes and with a backup product such as PKGBackup. Yes, it's expensive, but that one time you need it = money well spent...

    Marilyn
  13. Ronoxyboy
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    Ronoxyboy iPF Noob

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    Hi, I would like to upgrade my iPad which is currently running 3.2.1 to 4.3.3. Would it be possible to use the same procedures?
  14. Mickey330
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    Mickey330 Administrator Staff Member

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    No, for that you'll need to follow the tutorial for upgrading your iOS version firmware. Those instructions are here: http://www.ipadforums.net/jailbreak...des/26399-how-upgrade-your-ios-jailbreak.html

    Please note that you must - repeat MUST - have SHSH blobs for iOS 4.3.3 in order to upgrade to it (and then jailbreak it). If you don't have these blobs, your only upgrade is to iOS 4.3.5.

    Good luck.

    Marilyn
    Last edited: Aug 26, 2011
  15. Ronoxyboy
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    Ronoxyboy iPF Noob

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    I did it!!! My beloved iPad now runs 4.3.3 with all my configurations intact!! YAY!!!!
    Thanks, Marilyn.
  16. Mickey330
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    Mickey330 Administrator Staff Member

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    Yay +1!

    Always glad to read/hear of a success story. Thanks for the update.

    Marilyn
  17. castophere
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    castophere iPF Noob

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    Hi, I'm currently running 4.2.1. The only IOS available for upgrading in iTunes is 4.3.5.
    Is it possible to upgrade my jailbreak 4.2.1 to 4.3.3 without loosing my saved data
  18. guthrien
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    guthrien iPad Enthusiast

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    As it says right above, only with saved blobs. Otherwise, no.
  19. andrewhtf
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    andrewhtf iPF Novice

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    I have a little bit of a problem here to proceed with step 2 and 3. My ipad1 is currently stuck in a loop showing the black screen with apple logo and a frozen progress bar at 40%. (result of my mistake in resetting an already JB'ed ipad.)

    Plugged it in but TU doesnt detect it at all so i am unable to press "Save SHSH". I did not save my blobs locally prior to this due to procrastination. Further i have not paid attention to the list of saved blobs when in Cydia so i dont know what blobs i have in Saurik's server, but i'm sure there is at least one.

    Is there any other way i can make TU to detect my device so i can get the blobs downloaded, before i proceed to restore the iOS? Will putting my ipad in DFU mode allows TU to detect it?

    Or should i just proceed with itunes restore to 4.3.5 first, get the iOS up and running, only then attempt to get the blobs using TU as per the above guide?
  20. astra
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    astra iPF Noob

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    Last edited: Aug 31, 2011

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