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  • iOS 4.2.1 Does Baseband Checks; ultrasn0w Out By Sunday?


    Apple has defeated TinyUmbrella's iPhone 4 baseband protection by implementing a boot level signature check in iOS 4.2.1. It's probably unnecessary to reiterate the warning that's been out there since before the upgrade dropped, but unlockers should really, really avoid upgrading. Meanwhile, MuscleNerd wishes everybody a happy Thanksgiving, and says he thinks the next version of ultrasn0w may be ready, at least for some users, as soon as Sunday.

    Adventurous unlockers have already found that if they try to run iOS 4.2.1 on a device with an older baseband, it will show the message "An unknown error has occurred" and go into recovery mode. TinyUmbrella is no longer able to kick iPhones out of recovery for iOS 4.2.1 because the baseband nonce is now checked, just like the SHSH is checked for firmware revs. So at this point there's no way out of that except to install the new baseband (killing the unlock) or downgrading to iOS 4.1 (assuming one has saved SHSH blobs).

    Help is on the way, though. MuscleNerd tweeted from the Thanksgiving table this morning to say he's making good progress on ultrasn0w. iPhone 3G and 3GS unlockers may have a working ultrasn0w by "Sunday/Funday;" iPhone 4 users will have to wait a little longer.

    Source: Twitter
    This article was originally published in forum thread: iOS 4.2.1 Does Baseband Checks; ultrasn0w Out By Sunday? started by Paul Daniel Ash View original post
    Comments 116 Comments
    1. Simon's Avatar
      Simon -
      You need to use redsn0w to boot the phone every time.
    1. pheazy's Avatar
      pheazy -
      i have the 3gs. so i am pretty much screwed right.
    1. EskimoRuler's Avatar
      EskimoRuler -
      Just waiting for an untethered jailbreak for iPad and ip4. Keep the good work up guys
    1. pheazy's Avatar
      pheazy -
      questin, i am pretty retarded when it comes to this, but can i use the new redsn0w to jailbreak and where do i get the ipsw file. if someone can explain i would really appreciate it thanks
    1. Simon's Avatar
      Simon -
      Quote Originally Posted by pheazy View Post
      questin, i am pretty retarded when it comes to this, but can i use the new redsn0w to jailbreak and where do i get the ipsw file. if someone can explain i would really appreciate it thanks
      You can follow this: iClarified - iPhone - How to Jailbreak Your iPhone 3GS Using RedSn0w (Windows) [4.2.1]
    1. iphone?3gs's Avatar
      iphone?3gs -
      Quote Originally Posted by zozodouce View Post
      man i'm so happy i gave up my iphone 4 for an unlock galaxy tab with full phone functions. it's like having an iphone and an ipad all in one, life is much more fun now no need to have more than one device.my galaxy tab does it all and more hahahahahaha.
      Well thats pretty good for you, ill stick with my iPhone and iPad because im not in the mood for putting a 7" tablet to my face and talking into it....
    1. CaptainChaos's Avatar
      CaptainChaos -
      People have downgraded their basebands back down to the unlockable when Apple was still signing 4.1 so it is possible, someway
    1. Simon's Avatar
      Simon -
      Quote Originally Posted by CaptainChaos View Post
      People have downgraded their basebands back down to the unlockable when Apple was still signing 4.1 so it is possible, someway
      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.
    1. zozodouce's Avatar
      zozodouce -
      Quote Originally Posted by iphone?3gs View Post
      Well thats pretty good for you, ill stick with my iPhone and iPad because im not in the mood for putting a 7" tablet to my face and talking into it....
      did you ever hear of a little invention call bluetooth? you are bag of douche.
    1. that_girl's Avatar
      that_girl -
      I'm not an unlocker, but I think it's so dirty. Someone needs to stop them.
    1. HachiRoku's Avatar
      HachiRoku -
      happy thanks giving to all. looking forward on unlocking 5.14.02
    1. sziklassy's Avatar
      sziklassy -
      Quote Originally Posted by delusion950 View Post
      am also switching phone. goin to android saying bye to iphone 4 nd iOS apple's BS.
      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!
    1. DevouredDreams's Avatar
      DevouredDreams -
      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!
      is the samsung captivate any good ive thought about android myself just to at least try it out
    1. sziklassy's Avatar
      sziklassy -
      Quote Originally Posted by zozodouce View Post
      did you ever hear of a little invention call bluetooth? you are bag of douche.
      LOL that's what I was thinking.

      Quote Originally Posted by DevouredDreams View Post
      is the samsung captivate any good ive thought about android myself just to at least try it out
      Everything I read says stay away from Samsung. I went with an HTC EVO, rooted it, put on a custom ROM, and couldn't be happier. Out of the box it was better than stock iOS, but with the mods I did it is that much better. Not a thing I miss on iOS to be completely honest.
    1. DevouredDreams's Avatar
      DevouredDreams -
      Quote Originally Posted by sziklassy View Post
      LOL that's what I was thinking.



      Everything I read says stay away from Samsung. I went with an HTC EVO, rooted it, put on a custom ROM, and couldn't be happier. Out of the box it was better than stock iOS, but with the mods I did it is that much better. Not a thing I miss on iOS to be completely honest.
      damn thats the only good android running phone on att.. dont want to go from a phone that i love just bored with at times to a ****** android that has bad reviews lol
    1. Dayvidpriddy's Avatar
      Dayvidpriddy -
      I've left iPhone for good and gone back to BlackBerry (Android phones have horrible battery life (6-7 hours before they die) and I just couldn't handle that) so I have a BlackBerry 9780 now and I'm very happy. Tired of Apple and Steve Job's ********! They just lost another customer...not that they care. Oh and the Friday sales are hilarious at best...11 bucks off an iPod Touch? WOW...I'm so running to apple.com tomorrow...NOT!

      They take off more money for their computers for the sale because they know the barely have any percentage at all of the computer industry, but when it comes to their devices that have put them on the map, they insult us with 11 bucks off?

      Up yours Stevo! I'm done with Apple for good, things are just to complicated with this company.
    1. clikzip's Avatar
      clikzip -
      i dont care about no unlock in that i use At&t. But i'd like to see a non-tethered jailbreak for the iPhone 4
    1. andsoitgoes's Avatar
      andsoitgoes -
      Who the hell cares about the jabber about android or blackberry phones??

      This is ModMyI, not android or blackberry.

      If you don't have an idevice, stop trolling here for the love of all things holy.
    1. Dayvidpriddy's Avatar
      Dayvidpriddy -
      It's ashame you have to "mod" your phone to make it work correctly lol. Enjoy your iTampons everyone!
    1. nitrogen521's Avatar
      nitrogen521 -
      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?