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SHSH Blobs FAQ

This is a discussion on SHSH Blobs FAQ within the iPad Hacking forums, part of the Apple iPad Discussions category; So i have an iDevice. and i have saved the blobs. do i have to resave them everytime i restore?? does my ecid ever change? ...

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  1. #11
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    So i have an iDevice. and i have saved the blobs. do i have to resave them everytime i restore?? does my ecid ever change? plz help

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  3. #12
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    Okay I think I understand. I have an iPad 1. It is running iOS 5.1. It has a tethered jailbreak installed which seems to be okay. I have no blobs saved. Sone apps (ScreenDimmer) will not install under 5.1. Some apps (screen dim) do do not seem to operate under 5.1.

    I would like to revert to 5.0.1. It appears from all I have read ( too late) that I can't do that.

    Please verify that Ian screwed on this at this time. And need to wait to see what the community will find.

  4. #13
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    Quote Originally Posted by barrygordon View Post
    Okay I think I understand. I have an iPad 1. It is running iOS 5.1. It has a tethered jailbreak installed which seems to be okay. I have no blobs saved. Sone apps (ScreenDimmer) will not install under 5.1. Some apps (screen dim) do do not seem to operate under 5.1.

    I would like to revert to 5.0.1. It appears from all I have read ( too late) that I can't do that.

    Please verify that Ian screwed on this at this time. And need to wait to see what the community will find.
    Yes, without blobs you can never go back. It's really important to start to save them as soon as you discover the subject. That gives you future protection!
    15" MacBookPro with Retina Display 16GB 3.4GHz i7 256GB | iPad4 WiFi 32GB 6.1.2 (evasi0n) | iPad3 4G 64GB 6.1.2 (evasi0n) | iPad2 3G 64GB 5.1.1 (redsn0w) | iPad1 3G 64GB 4.3.3 (jbme) |
    iPhone5 32GB 6.1.2 (evasi0n) | iPhone4S 64GB 5.1.1 (absinthe) | iPhone4 32GB 7.0b2 (stock) | iPhone3G 16GB 3.1.3 (jbme) | iPod Classic 6G 160GB (stock) | AppleTV 2G 5.0.2 (seas0npass)


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  5. #14
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    Thank you so much for your post! I learned everything I needed to know about shsh blobs. So basically, without blobs, you can't restore to that firmware. Save blobs! Every guide should mention this. I guess since it happens in the background, it leads to a lot of people (including me) running into a lot of errors.

    Clarification note: even if you use sn0wflake to create a custom firmware, it won't work if you don't have the shsh. If you use iFaith to create the custom with the shsh, you'll be able to use it! Also, iREB doesn't seem to work well. Use redsn0w's pwned DFU.
    Last edited by harvardjanitor7; 03-18-2012 at 02:36 AM.

  6. #15
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    Now I am confused

    f4780y said: "Yes, without blobs you can never go back. It's really important to start to save them as soon as you discover the subject. That gives you future protection!"

    I must admit, I read the SHSH Blobs FAQ and also the "How to restore your iPad using TU", and up until this post I thought I had screwed up beyond all hope.

    But, f4780y, this post gives me hope! So here is my situation:

    I had a iPad 2 WiFi, jailbroken at IOS 5.0.1. Was very happy. But then, the iPad was pestering me about upgrading to 5.1, I looked at the release notes, seemed innocent enough, and I foolishly upgraded to 5.1. [And by the way, this was very deceitful, how can Apple get away with this. I thought jailbreaks were legal. if so, I should be able to ask Apple that I want to downgrade, and ask for a working SHSH blob for 5.0.1. But I am sure I am delusional.]

    Then I realized my jailbreak is gone, and started reading these forums and realized the fatal mistake I had made. As a PC person, this kind of a wipe out is incomprehensible to me.

    Then, I used TU to retrieve my 5.0.1 SHSH blob from Cydia, which I believe I succeeded. I have a file on my PC:

    C:\Users\Greg\.shsh\<13-digit number>-ipad2,1-5.0.1.shsh

    So, the $600 question is: can I or can I not downgrade from 5.1 to 5.0.1? I have the 5.0.1 SSH blob, and this is only a WiFi iPad 2, which I think means no baseband. But that APTicket worries me.

    Thank you f4780y, you are the most knowledgeable and most helpful person I have seen in any forum.

    Greg

    P.S. If by any miracle I should be able to downgrade, then my question is on the "How to restore your iPad using TU" tutorial, because I don't see where the SHSH blog gets used/picked up. But maybe that happens automatically. Thanks again, Greg.

  7. #16
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    Quote Originally Posted by gregwalz
    So, the $600 question is: can I or can I not downgrade from 5.1 to 5.0.1? I have the 5.0.1 SSH blob, and this is only a WiFi iPad 2, which I think means no baseband. But that APTicket worries me.
    No, you can't restore 501 on an ipad2 as things stand today. Sorry.
    15" MacBookPro with Retina Display 16GB 3.4GHz i7 256GB | iPad4 WiFi 32GB 6.1.2 (evasi0n) | iPad3 4G 64GB 6.1.2 (evasi0n) | iPad2 3G 64GB 5.1.1 (redsn0w) | iPad1 3G 64GB 4.3.3 (jbme) |
    iPhone5 32GB 6.1.2 (evasi0n) | iPhone4S 64GB 5.1.1 (absinthe) | iPhone4 32GB 7.0b2 (stock) | iPhone3G 16GB 3.1.3 (jbme) | iPod Classic 6G 160GB (stock) | AppleTV 2G 5.0.2 (seas0npass)


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  8. #17
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    News update as of today, however still no ETA for a release - Exciting SHSH Blobs news for iPad2 and iPad3 owners
    15" MacBookPro with Retina Display 16GB 3.4GHz i7 256GB | iPad4 WiFi 32GB 6.1.2 (evasi0n) | iPad3 4G 64GB 6.1.2 (evasi0n) | iPad2 3G 64GB 5.1.1 (redsn0w) | iPad1 3G 64GB 4.3.3 (jbme) |
    iPhone5 32GB 6.1.2 (evasi0n) | iPhone4S 64GB 5.1.1 (absinthe) | iPhone4 32GB 7.0b2 (stock) | iPhone3G 16GB 3.1.3 (jbme) | iPod Classic 6G 160GB (stock) | AppleTV 2G 5.0.2 (seas0npass)


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  9. #18
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    I have an iPad2 3G which came with 5.0.1 as the base firmware version and I have been waiting for the opportunity to play with jail breaking. I guess the jailbreak process creates a custom 'spoof-signed' version of 5.0.1. using the currently installed blobs as a base.

    The question I have is, if I subsequently perform a full DFU restore to a virgin state, will iTunes force the resigning of blobs and restore to Apple's current 'latest' version (5.1) rather than the currently unjailbroken version of 5.0.1?
    Last edited by Greenback; 04-04-2012 at 02:40 PM.

  10. #19
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    Quote Originally Posted by Greenback View Post
    I have an iPad2 3G which came with 5.0.1 as the base firmware version and I have been waiting for the opportunity to play with jail breaking. I guess the jailbreak process creates a custom 'spoof-signed' version of 5.0.1. using the currently installed blobs as a base.
    Eh, no, you've misunderstood something. There is nothing in the jailbreak process related to spoofing SHSH Blobs. The security cannot be circumvented and they cannot be spoofed under any circumstances. Blobs control what firmware you can install on your device. If you don't have blobs you can't install that version.

    Quote Originally Posted by Greenback View Post
    The question I have is, if I subsequently perform a full DFU restore to a virgin state, will iTunes force the resigning of blobs and restore to Apple's current 'latest' version (5.1) rather than the currently unjailbroken version of 5.0.1?
    That part is correct. You cannot currently restore anything but the current version of IOS on your device, which is 5.1 today. You won't have saved 5.0.1 blobs either. Whist those are of no use at the moment, we expect them to be useful in the very near future. Whilst that is great news for others, it isn't of any use to you since you don't already have them saved and there is no way to get them now

    Since you have 5.0.1 at the moment, you can at least jailbreak. You just need to take care once you are jailbroken. If you need to restore you will need to live without the jailbreak for a while until a 5.1 JB is released for iPad2
    Hope that clarifies.
    Greenback likes this.
    15" MacBookPro with Retina Display 16GB 3.4GHz i7 256GB | iPad4 WiFi 32GB 6.1.2 (evasi0n) | iPad3 4G 64GB 6.1.2 (evasi0n) | iPad2 3G 64GB 5.1.1 (redsn0w) | iPad1 3G 64GB 4.3.3 (jbme) |
    iPhone5 32GB 6.1.2 (evasi0n) | iPhone4S 64GB 5.1.1 (absinthe) | iPhone4 32GB 7.0b2 (stock) | iPhone3G 16GB 3.1.3 (jbme) | iPod Classic 6G 160GB (stock) | AppleTV 2G 5.0.2 (seas0npass)


    Please review the hacking section rules and our main rules before posting!

  11. #20
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    Thanks f4780y, I think It's sinking in now. It's a shame I hadn't double-checked the availability of a 5.0.1 jailbreak earlier, I would have been able to have saved some 5.0.1 blobs. I'll do some more reading and make sure I'm fully up to speed before I dip my toe in the jailbreak water!
    Last edited by Greenback; 04-05-2012 at 02:29 AM.


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