Dev-Team Blog
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Pre-game show 

On Tuesday, Apple released firmware 3.1.3 for the iPhone and iPod touches.  Unless you’ve personally observed a problem with the reporting of your battery percentage, there’s no reason to update to 3.1.3.  We know some of you will want to anyway.  Superbowl Sunday’s PwnageTool 3.1.5 for Mac OS X will let you do so safely, preserving your jailbreak and ultrasn0w unlock.  (If you use the blacksn0w unlock (at baseband 05.11.07), you need to stay at 3.1.2.)

iPhone 3G and 3GS unlockers should always be very wary to update their firmware.  This is no exception.  If you make a mistake along the way you may find yourself updating to official 3.1.3 in which case you will lose your unlock, possibly forever.

iPhone 3GS users (regardless of unlock) should stay away from this and all 3.1.3 jailbreak tools unless you know you have your “SHSH hashes” backed up via Cydia.  That’s because if you make a mistake you may find yourself stuck at official 3.1.3 with no way to jailbreak or come back down to 3.1.2 to jailbreak.

If you really truly feel that you need to update, this version creates a custom 3.1.3 IPSW for you to restore to on your iPhone 2G, iPhone 3G, iPhone 3GS with early bootrom, iPod touch 1G, and iPod touch 2G with early bootrom.  If you don’t know if you have an early bootrom or not, please avoid updating until you learn more.

You don’t need to be pre-jailbroken on anything but the iPod touch 2G early bootrom.  And really for that device, it’s faster and easier to use redsn0w 0.9.4 as mentioned in our last post.  For that matter, if you have an ipt1g, iphone2g, or iphone3g(and don’t need an unlock), you should use redsn0w too (but version 0.9.3).  It’s faster and you won’t have to go through a full restore process (just do an update then run redsn0w, pointing it at 3.1.2 FW instead of 3.1.3).

If you have an iPhone 3GS: PwnageTool works if you’re currently at version 3.1.2 or below (down to 3.0) and if you know you have a old bootrom. You don’t need to be already jailbroken — PwnageTool will ask you if you’re jailbroken after you’ve created the IPSW.  Don’t use PwnageTool unless you know for sure you have an old bootrom (if you’re not sure, assume the worst and don’t use it).  Don’t use PwnageTool on the iPhone 3GS if you’re at 3.1.3, it just won’t work.    Downgrade to 3.1.2 using the methods described here.  If you can’t downgrade because you don’t have your 3GS 3.1.2 hashes on file with Cydia, you’ll need to sit out the 3.1.3 jailbreak.

We aren’t revealing any new exploits to Apple with this jailbreak. Everything here has been used before, it’s just a straightforward port of Pwnage2 and 24Kpwn to the new firmware.  It’s possible the new firmware was released largely to flush out new exploits before the next big release.  We won’t be biting.

We’d really like the above warnings and disclaimers to sink in. Please don’t download the files below and use them blindly.

Please feel free to ask any questions in the comment section below.  We’ve got a bunch of expert help there, including our friendly moderators confucious and angie!

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Unofficial Mirrors

The following links are unofficial download mirrors, you download these archives at your own risk, we accept no responsibility if your computer explodes or if it becomes part of a NASA attacking botnet or even worse if your hands fall off mid-way during the use of these files. We do not check these links and we accept no responsibility with regard to the validity of the files, the other content that these links may provide or with the content that is on the third-party linked site.

Always check the files that you have downloaded against our published SHA1 hash. We would prefer that you downloaded the official bittorrent release that is linked above, but you are welcome to try these if you really must. Mirror owners should email direct download links only (no rapidshare or filesharing sites please) to blog@iphone-dev.org — please don’t place mirrors in the comments as they will be deleted.

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