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redsn0w 096b5 top Step by step Tutorial: How to Jailbreak and Unlock Your iPhone 3GS Using RedSn0w 0.9.6b5 (Windows) [iOS 4.2.1]

This is step-by-step instructions on how to jailbreak and unlock your iPhone 3GS on iOS 4.2.1 firmware using RedSn0w 0.9.6b5 for Windows.

For iPhone 3G use this tutorial.

If you have an iPhone 3GS with the new bootrom you will only be able to perform a tethered jailbreak at this time. This means you will need Redsn0w’s assistance to boot into your jailbroken device.

IMPORTANT FOR UNLOCKERS
During this process you can update your baseband to the 06.15 version. If you are on 05.14 or 05.15 or higher you will need to do this to unlock. You do not need to do this for jailbreak only. Please read the following very carefully before deciding whether to do this.

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ultrasn0w 421 2 266x400 UltraSn0w iPhone unlock fully working on iOS 4.2.1

MuscleNerd has recently announced via tweeter that ultrasn0w unlock for iPhone is now fully working on iOS 4.2.1

Finally got ultrasn0w working fully on 4.2.1. Apple inadvertently(!) broke ultrasn0w via aggressive compiler optimization

MuscleNerd previously announced that the ultrasn0w unlock should be available by Sunday for the iPhone 3G and iPhone 3GS. The unlock for the iPhone 4 will take much more time.

UPDATE: this is not a reason for update to iOS 4.2.1, wait for utilities.


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DevTeam hacker MuscleNerd tweeted that they after releasing redsn0w jailbreak for 4.2 the team can start working on iPhone unlock. Users can expect the unlock for the iPhone 3G and iPhone 3GS this week. The iPhone 4 unlock will take more time and no concrete info is available about that yet.

unlcok 421 iPhone iOS 4.1 unlock will be released this week (might work with iOS 4.2.1)

The ultrasn0w unlock will be released for iOS 4.1 firmware. So is you need unlock, do not update to iOS 4.2.1.

pwnage 20

DevTeam released PwnageTool 3.1. This utility will allow users of iPhone 2G, iPhone 3G, iPod Touch to run jailbreaked firmware 3.1. We still recommend staying on firmware 3.0/3.0.1 for as long as possible. The 3.1 firmware is not worth it. But if you really want 3.1. Here are the details:

  1. If you are using a 3G iPhone with ultrasn0w and rely on ultrasn0w to obtain cellular service, then you should only upgrade to 3.1 with a PwnageTool created .ipsw. Never update using Apple’s unmodified firmware. Stay away from Apple’s direct updates.
  2. This version of PwnageTool WILL NOT work for the iPhone 3GS and iPod Touch 2G/3G.
  3. PwnageTool WILL work for Original iPhone (1st Generation), Original iPod touch (1st Generation) and the iPhone 3G.
  4. It works only with Mac OS X.
  5. Future releases of PwnageTool and RedSn0w will be soon with more functionality.

Here is per device info:

iPhone 3G (unlocked): This model of iPhone 3G doesn’t have an Service Provider lock (aka factory unlocked) and you are able to put any SIM card into the phone and get service. Your phone is already unlocked so you do not need to worry about baseband updates, simply upgrade to 3.1 using iTunes and then use PwnageTool to create an ipsw and then use this to jailbreak your phone.

iPhone 3G (locked): You need to preserve 3.0 baseband. Create a custom firmware.

iPhone 2G (1st Generation): Use PwnageTool to do the magic and then restore with iTunes using your newly created .ipsw, you don’t need to worry about anything, the baseband will be unlocked, the phone jailbroken.

iPod touch 1G (Original iPod Touch): Use PwnageTool to create a firmware image and restore with that .ipsw using iTunes.

iPod touch 2G: Sorry, no support at this time within PwnageTool, use Redsn0w for an earlier (pre 3.1) firmware release instead.

iPod touch 3G (New iPod Touch): Sorry, no support at this time within PwnageTool.

You can download PwnageTool 3.1 in our utilities page.

ultrasnow 266x400 ultrasn0w 0.9: ideas from GeoHot, implementation from DevTeam

DevTeam updated ultrasn0w. They removed the daemon and used ideas of GeoHot’s purplesn0w, but implemented these ideas in a better safer way. New ultrasn0w 0.9 uses 152 bytes of baseband RAM, which is 6900 timesless than purplesn0w. They also use mobile substrate to patch CommCenter, instead of patching the file itself.

Here is a list of features from DevTeam.

  • Works on both 3G and 3GS.
  • Works on hacktivated devices.
  • Works regardless of how you jailbroke your device.
  • Doesn’t patch any mach-o binary whatsoever.  (Doesn’t require a separate patch as each new firmware comes out).
  • Doesn’t install any additional daemon
  • Has no race conditions, no popups about “Missing SIM”, no network issues
  • Is almost 7000 times smaller than its nearest competition :)
  • Is available now via Cydia.  Source repo is http://repo666.ultrasn0w.com (that last “0” in ultrasn0w is a zero!)

Anyway this new solution is a very good one. It uses good ideas in a good way. We recommend to use ultrasnow.

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