ultrasn0w for iOS 4.2.1 is out now, works with iPhone 3G & 3GS

by Abhishek on November 29, 2010 · 4 comments

Filed in: News

As promised, Dev team has finally released their new version of ultrasn0w which can unlock iOS 4.2.1 running on iPhone 3G, 3GS. If you are using iPhone 4 and using ultrasn0w for unlock then you should just stay away from iOS 4.2.1 update from iTunes because this version of ultrsn0w will not unlock iPhone 4′s baseband.


Today we’re pleased to announce our free carrier unlock for iPhone3G/3GS owners with a baseband later than 05.13.04.  The unlock for that baseband exploited the AT+XAPP command, thanks to a crash initially discovered by @sherif_hashim (@Oranav also found this crash).  So what hole are we exploiting today, since Apple closed that AT+XAPP hole?  Well, we’re exploiting the exact same hole!

It turns out that the very first iPad firmware 3.2.2 has baseband version 06.15.00 still vulnerable to AT+XAPP. The iPad baseband is built for the exact same baseband chip as the iPhone3G/3GS — they’re fully compatible! Some of us have been running 06.15 for weeks now on our iPhones in preparation for this release.

Since 06.15 is a higher version than 05.14 or 05.15 (where AT+XAPP is gone), anyone stuck at those versions can simply upgrade to 06.15 to unlock again!  Luckily for us, Apple *still* provides the iPad FW 3.2.2 with this vulnerable baseband right from their own servers. (Grab it now, before they take it down!)

We’ve been busy updating both PwnageTool and redsn0w to make the baseband update as seamless as possible.

  1. First up is “PwnageTool 4.1.3 Unlock Edition”.  It has a special dialog box which will ask you if you want to update to the iPad baseband.  You must already have the iPad 3.2.2 IPSW on your computer (see the above link)….so just point PwnageTool at it (or let it find it on its own if you’re in “simple” mode).
  2. Directly after PwnageTool 4.1.3 is available, the official ultrasn0w repo http://repo666.ultrasn0w.com will be updated with ultrasn0w 1.2, which covers iPhone 4 baseband 01.59.00 and iPhone 3G/3GS basebands 04.26.08, 05.11.07, 05.12.01, 05.13.04 and now 06.15.00.
  3. Finally, we’ll release an update to redsn0w today for those without Macs and can’t run PwnageTool.  The new redsn0w will give you the option to update your baseband to 06.15 too.


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{ 4 comments… read them below or add one }

yasser November 29, 2010 at 4:23 am

i have iphone 3gs version 3.13 ultrasnow carrier .
modem firmware 05.12.01
can i jailbreak it on os 4.2

mike November 29, 2010 at 4:45 am

ok, so i have a iphone 3g
ios 4.0.1
BB 05.14.02
and i am already jailbroken, do i restore my iphone and then rejailbreak it with redsn0w when it comes out or can i leave my jailbreak and still use the redsn0w? im not quite sure, this is the only part i am confused about, plz help me lol
thank very much dev team for making this possible :)!

mike November 29, 2010 at 4:50 am

ANND im not sure if i update my ios to 4.2 from itunes. ?

david whitfield March 13, 2011 at 9:31 pm

runnimg win xp, extracted redsnow and iswp files, but when asked to browse for files i can’t click on it and see it in the file box so redsnow can verify! did i do something wrong?