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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. tomtom's Avatar
      tomtom -
      i'm running to iphone 4 here with 4.2.1 NON JB with Baseband from 4.1! i just kicked them out of recovery with tinyumbrella (an older version/the second recent i think)

      so whats the deal?

    1. DevouredDreams's Avatar
      DevouredDreams -
      Quote Originally Posted by tomtom View Post
      i'm running to iphone 4 here with 4.2.1 NON JB with Baseband from 4.1! i just kicked them out of recovery with tinyumbrella (an older version/the second recent i think)

      so whats the deal?
      your running 4.2.1 with baseband 2.10 or 3.10
    1. florevil's Avatar
      florevil -
      Yeaaaah great cant wait ^_^
    1. Deroelsikario's Avatar
      Deroelsikario -
      Quote Originally Posted by mosesjade View Post
      ive been waiting for this, yesss!
      You not the only one lol
    1. ajagtiani's Avatar
      ajagtiani -
      Yes! That is some good news!
      Finally an unlock for 5.14.02. Waited a month and a half for it
    1. atm_10142k's Avatar
      atm_10142k -
      Hi everyone i found that the old umbrella will kick phone out of recovery. It worked for me.
    1. cheme75's Avatar
      cheme75 -
      Quote Originally Posted by corkey20000 View Post
      f0recast ?
      no - I use f0recast - this was on a web page somewhere - had all the current info for all the idevices. should have bookmarked it or left it in history.
    1. hoodies's Avatar
      hoodies -
      That's great news! It has been a long time waiting for alot of us from the sounds of it thank god I did my reading and I stayed on 4.1 this will be my first unlock so hopefully everything will go to plan! Just have to keep using my iPhone 3GS as a expensive iPod touch! Lol till sunday give or take some. Happy thanks giving all!
    1. brian5s's Avatar
      brian5s -
      Can't Saurik or someone setup a server like the SHSH Server to perform the check through the proxy instead of Apple's server? Or is this a hardcoded firmware thing?
    1. ibednego's Avatar
      ibednego -
      u cant do anything, for right now .......just wait!

      Quote Originally Posted by rabbit_ View Post
      Downgrade using your saved shsh (hopefully) you saved them
      Downgrading wont do anything to baseband.
    1. kewty01's Avatar
      kewty01 -
      Quote Originally Posted by pheazy View Post
      i have upgraded to 4.2 and have the new baseband 05.15.04... what do i do help
      sorry... but I have to hahahahahahhahahahahahahahaaaaa.....
    1. \m/ibnziceman\m/'s Avatar
      \m/ibnziceman\m/ -
      thats cool that they took time from their thanksgiving to give us an update. happy thanksgiving to everyone out there
    1. zozodouce's Avatar
      zozodouce -
      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.
    1. eduardo63's Avatar
      eduardo63 -
      Can't wait, been doing so for almost two months, I've learned quite a bit since then... Thank you to everyone that has been working on the unlock for baseband 05-14-02.
    1. eduardo63's Avatar
      eduardo63 -
      Quote Originally Posted by ggab View Post
      lol
      punt!!
    1. norfskate's Avatar
      norfskate -
      Quote Originally Posted by delusion950 View Post
      am also switching phone. goin to android saying bye to iphone 4 nd iOS apple's BS.
      Bye bye
    1. romeo_herman's Avatar
      romeo_herman -
      He..he...he....finally ultrasn0w will get an update...nice..
    1. zozodouce's Avatar
      zozodouce -
      Quote Originally Posted by delusion950 View Post
      am also switching phone. goin to android saying bye to iphone 4 nd iOS apple's BS.
      man that is the best move i have ever made in my life,android is much more open you wont have to deal with apple's bull.
    1. whereswaldo's Avatar
      whereswaldo -
      Good news, hopefully when this is done they can work on an untethered JB
    1. miladkhahil's Avatar
      miladkhahil -
      Anyone having problem with cydia after jailbreak iPhone 4 with the redsn0w on 4.2.1 ...!!!
      Mine doesn't work .. I had to restore my iPhone twice and now without a jailbreak ..TinyUmbrella doesn't kick it out of recovery .. So i manage to restore it with itune after deleting my etc/hosts file on my notepad and tried the jailbreak again .. It worked and downloaded cydia but when i tried to get my pkgbkup running it got stuck so i tried again .. No success restore it again and tried to this time to download Winterboard first and and SBSetting .. It got stuck after reboot on the apple sign .. So i had to restore it again from zero and now i do not have a jailbreak .. :-(
      Am i doing anything wrong .. I am supposed to know .. This is not my first rodeo with the iPhone jailbreak and unlock .. My iPhone 4 is factory unlocked with the newsest Baseband and the 4.2.1 FW any help will be very appreciated .. Unless i have to wait for the unthedered one ..