Jargon Buster – What Is A SHSH File?

a SHSH In all newer iDevices, when restoring firmware files through iTunes, iTunes requests a certain , (a kind of authorization). This allows Apple to deny to firmware files that they no longer support.

This is bad news for jailbreaking users. If you upgrade to a newer firmware and then find you cannot jailbreak it, you will be stuck, unless you have your SHSH files for the firmware you need to downgrade to.

So basically, in summary, saving SHSH files is an amazing idea! It allows you to downgrade to all previous firmwares provided by Apple.

For a full tutorial on how to save your SHSH files using TinyUmbrella, click here. Also, for a full tutorial on how to downgrade using saved SHSH files, click here if you are using Mac OS X, and click here if you are using a PC

14 Responses to Jargon Buster – What Is A SHSH File?

  1. […] of all – lets ask the question, why do I need to back up my SHSH files? What are SHSH files? You can find answers to both those […]

  2. […] This post was mentioned on Twitter by 屁兔, iphoneblogr. iphoneblogr said: Jargon Buster – What Is A SHSH File? http://goo.gl/fb/h253R […]

  3. […] got tons of questions floating around asking “Why isn’t Cydia displaying my saved SHSH blobs? Are they gone? Did I save my SHSH files in vain?” The answer is NO, they ARE saved, […]

  4. […] a full tutorial on how to save your SHSH files using TinyUmbrella click here. For a Jargon Buster – What is a SHSH file? Click […]

  5. […] is a tutorial on how to edit the host files on your mac in order to downgrade your iDevice using SHSH files you have previously […]

  6. […] is a tutorial on how to edit the host files on your PC in order to downgrade your iDevice using SHSH files you have previously […]

  7. […] a simple explanation on what SHSH files are and why they are useful, click here. Also, for a full guide on how to save your SHSH files using TinyUmbrella click […]

  8. Rob-L says:

    Ah, great tip. Thanks!

  9. […] Apple is no longer signing this firmware. To be able to restore to this version you need to have shsh files saved for this firmware. If you have shsh files saved please follow this […]

  10. […] What are SHSH blobs and why should I care? A: SHSH blobs are what you need if you want to downgrade to an iOS version that Apple’s no longer signing. […]

  11. […] do not know what an SHSH key is then you most likely do not have it saved. You can check out our What is an SHSH file […]

  12. […] do not know what an SHSH key is then you most likely do not have it saved. You can check out our What is an SHSH file […]

  13. […] With the release of iOS 5.1, Apple has now closed the signing window for iOS 5.0.1. SHSH files are required for all (non-A5) devices who are wanting to downgrade to an older firmware. For more information on SHSH files and how to save them, click here. […]

  14. Ptrulli says:

    Man im trying to restore to 5.0.1, felix the site where u get ipsw from doesnt even have 5.0.1 so I found it google. Anyway im trying to restore im getting “This device is not eligible for the request build” 
    I tried going to hosts deleting the .apple.gsm textm then I get a 1600 error, tried using tiny umbrella started the tss server, still get the “Not eligible error” HELP??

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