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Thread: iOS 4.2.1 Does Baseband Checks; ultrasn0w Out By Sunday?

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Originally Posted by x98car Yup as long as Apple is signing 4.1 a iPhone 4 can downgrade baseband from 3.10.01 to 2.10.04 by restoring to 4.1. Doesnt help unlockers yet
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  1. #61
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    Quote Originally Posted by x98car View Post
    Yup as long as Apple is signing 4.1 a iPhone 4 can downgrade baseband from 3.10.01 to 2.10.04 by restoring to 4.1. Doesnt help unlockers yet but it is always safer to stay on the lowest possible baseband when needing to unlock.
    I don't really get it. If you're on 4.2, and restore back to 4.1, your BB goes down with it. However, once apple stop signing, u can still downgrade firmware with SHSH saved, but not BB? How come Saurik's server can't do the same thing?

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    Superbad Modder-ator Simon's Avatar
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    Because the baseband has its own SHSH to deal with. And unlike the firmware SHSH where you can use the same one every time you restore, the baseband SHSH is randomly generated each time. So the SHSH that you get during one restore will not be accepted in the next restore.

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    Quote Originally Posted by x98car View Post
    Because the baseband has its own SHSH to deal with. And unlike the firmware SHSH where you can use the same one every time you restore, the baseband SHSH is randomly generated each time. So the SHSH that you get during one restore will not be accepted in the next restore.
    Watch Apple screw us over and gives us random SHSH everytime.

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    Superbad Modder-ator Simon's Avatar
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    Ya, that would suck

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    Quote Originally Posted by HayWire View Post
    Did you read? Their isn't an unlock for this yet, it's coming Sunday. Sheesh.
    Quote Originally Posted by flash66 View Post
    Your an ignorant moron!
    fail

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    Quote Originally Posted by x98car View Post
    Ya, that would suck
    I predict it will do that on iOS 5.

    Couldn't Saurik just cache all the bb shsh, and do a plug and shove? ;\

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    Superbad Modder-ator Simon's Avatar
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    If he could I am sure him or someone else would have by now.

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    Quote Originally Posted by sziklassy View Post
    I just did this myself. After using android for a week now I don't even know how I got sucked into iOS for three whole years!
    I might be of a few, but I actually wanted to go back to my iPhone after using Android. At first it seemed awesome to me but then it got me bored...

    Quote Originally Posted by zozodouce View Post
    did you ever hear of a little invention call bluetooth? you are bag of douche.
    Im sorry if im feeling douche today, but i didnt really think about that at first. I dont really use bluetooth ever, and keeping this in your pocket and then using it dosent do much good either. Is that your phone or are you really really excited to see me?

    Quote Originally Posted by zozodouce View Post
    did you ever hear of a little invention call bluetooth? you are bag of douche.
    Im continuing my douche streak right now.... So you are really going to go around with this and use it as your main phone? With bluetooth or without, this would be fine for a tablet, but not for a phone.

    Wait...

    Also didnt they block phone capabilities from US models?
    Last edited by iphone?3gs; 11-25-2010 at 11:33 PM. Reason: Automerged Doublepost
    Username is 3GS, but theres stuff past that:

    iPhone 4
    iPad
    Macbook Pro

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    What in God's name has happened to this forum, seriously people

    www.caniunlock.com

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    Quote Originally Posted by Dayvidpriddy View Post
    It's ashame you have to "mod" your phone to make it work correctly lol. Enjoy your iTampons everyone!
    Lol. I love Cydia, but it's a shame to have to use it if you want a full functional phone. I used to think the iPhone was the ultimate phone. Not without jailbreaking it's not.

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    dev team, rawks my iPad needs it !!! 

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    Quote Originally Posted by nitrogen521 View Post
    I predict it will do that on iOS 5.

    Couldn't Saurik just cache all the bb shsh, and do a plug and shove? ;
    Quote Originally Posted by x98car View Post
    If he could I am sure him or someone else would have by now.
    In order for Cydia to cache all the possible nonce responses, Saurik would need to cache 16^40 or 146,150,163,733,090,291,820,368,432,716,283,019,65 5,932,542,976 responses. And that's assuming that the responses aren't strictly hardware-dependent or that the baseband is limited to a forty-digit hexadecimal number-used-once.

    Basebands for the i4 have always been nonce-signed. Always will be (it's a bootrom requirement). However, the actual generation of a nonce and its reception are all done (I think) in the baseband firmware (AT+XNONCE command is sent). The baseband bootrom just looks for a validly signed certificate response with a response that matches the nonce the firmware generated, maybe the IMEI, maybe the BB serial number, etc.

    There's a check of some sort for BB version or BBUpdater running in 4.2.1. However, it doesn't appear to be in userland, and it likely only runs once (as evidenced by phones on 4.2.1 having outdated basebands). Perhaps it's not a version check that's causing this issue, but rather, Apple just blocked the method TinyUmbrella uses to throw phones out from recovery mode.

    I'd still love someone to trudge through iBoot, the userland, and get a dump of the NVRAM on a "non-booting mismatched-BB" 4.2.1 phone... and someone far smarter than I to analyze it!

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    Ultimate jailbreak and unlock wizard. Peeps this is better then forcast as you vist on your I device and it has all the latest news jb ul

    Quote Originally Posted by ingesterfella;
    Ultimate jailbreak and unlock wizard. Peeps this is better then forcast as you vist on your I device and it has all the latest news jb ul
    Just click on my link you can also save it on your device
    Last edited by ingesterfella; 11-26-2010 at 03:12 AM. Reason: Automerged Doublepost

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    Quote Originally Posted by Dayvidpriddy View Post
    It's ashame you have to "mod" your phone to make it work correctly lol. Enjoy your iTampons everyone!
    It actually warms my heart to know that you're so bitter about your "Apple experience" that you feel the need to constantly talk about and put down their products. Go you!
    We're all just toymakers in the game of life.

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    Quote Originally Posted by ingesterfella View Post
    Ultimate jailbreak and unlock wizard. Peeps this is better then forcast as you vist on your I device and it has all the latest news jb ul



    Just click on my link you can also save it on your device
    That's useful

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    Read ur posts and the iPhone is more stable than any android phone. Noobs click my link for helpful videos cuz it's really a lot of info to digest and relax!

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    Quote Originally Posted by delusion950 View Post
    am also switching phone. goin to android saying bye to iphone 4 nd iOS apple's BS.
    Same here!

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    Quote Originally Posted by c00l0ne66 View Post
    Same here!
    Isn't there an android forum for you guys?

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    Quote Originally Posted by jamriman View Post
    Isn't there an android forum for you guys?
    Ya they can click up the top, Modmyi has a sister site called ModMyMobile for Android and other phones.

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    I would love to be on 4.2.1 right now..

    Quote Originally Posted by sziklassy View Post
    I just did this myself. After using android for a week now I don't even know how I got sucked into iOS for three whole years!
    Yet you're still spending time on an Apple forum....hmmm. Nothing better to do?

    Quote Originally Posted by Dayvidpriddy View Post
    It's ashame you have to "mod" your phone to make it work correctly lol. Enjoy your iTampons everyone!
    And you have nothing better to do either....

    Quote Originally Posted by delusion950 View Post
    am also switching phone. goin to android saying bye to iphone 4 nd iOS apple's BS.
    Sweet, one less whiner!
    Last edited by steve-z17; 11-26-2010 at 09:31 AM. Reason: Automerged Doublepost

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