Mac users can now also upgrade their iPhone and iPod touches to OS 3.1.3 similar to Windows. Previously iH8sn0w dev team released the original sn0wbreeze 1.4 to jailbreak the latest OS, however it was limited to Windows users. Now, Apple has released a version suitable for Mac known as the Pwnage Tool 3.1.5 to allow their users to safely upgrade to the new OS while preserving the jailbreak and ultrasn0w unlock.

However like most previously released jailbreak, this new software comes with a warning. There’s no real reason to update to 3.1.3 unless you observe a problem with your battery percentage. But if you simply feel like doing so, read these warnings and advice carefully before using PwnageTool 3.1.5 or Redsn0w to avoid any complications:

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).

Meanwhile, here’s a specific piece of advice for iPhone 3GS users:

If you have an iPhone 3GS, PwnageTool works if you’re currently at version 3.1.2 or below (down to 3.0). 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 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.

Despite all the warnings and precautions a consumer must take, the iPhone Dev Team attempts to reassure clients by calling this software as a “pre-game show” saying:

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.

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The earlier release of sn0wbreeze version 1.3 was botched by some minor bugs present in the software. After careful consideration and adjustments, iH8sn0w had fixed the bugs and finally releases a new working version to jailbreak and unlock iPhone OS 3.1.3, the Sn0wbreeze 1.4. This new software would allow any iPhone OS 3.1.2 or lower to upgrade to the new OS. The dev team describes the software as follows:

sn0wbreeze is a tool for Windows that will jailbreak your iPods and iPhones, setup custom boot logos, activate your iPhone, root partition size, build custom IPSW, and more!

Keep in mind though that 3.1.3 is simply a minor firmware version. You don’t necessarily need this upgrade for your iPhones. However many would still want to upgrade so it is important to keep this reminders in check before doing so.

Before proceeding with the upgrade, check carefully first than you have an iPhone or iPod touch running OS 3.1.2 or lower, which has been previously jailbroken or pwned. This is very important for Sn0wbreeze won’t work if you already have the new OS 3.1.3. This is only suitable for those with a jailbroken iPhone running a lower and older version of the OS.

Aside from the software compatibility, Sn0wbreeze doesn’t also work on all device types and models. Here is the list of devices that can be jailbroken:

  • iPhone 3GS (OLD BOOTROM ONLY. If the 4th/5th digits of the serial # are before 40 then you should have the old bootrom. If your current jailbreak is tethered DO NOT try this.)
  • iPhone 3G
  • iPhone 2G
  • iPod Touch 2G (OLD BOOTROM ONLY. If your current jailbreak is tethered you have the new bootrom so stay away and/or If your model # starts with MC you have the new bootrom so stay away!)
  • iPod Touch 1G

And here is the list of devices it can unlock:

  • All iPhone 2G
  • iPhones with 04.26.08 Baseband
  • iPhones with 05.11.07 Baseband

To find your baseband, go to the Settings app of your phone. Choose General, then about, and lastly modem firmware.

Download the latest version of Sn0wbreeze straight from iH8sn0w’s website.

A general reminder to all: Hacking your iPhone could void its warranty for good. So please keep in mind to be careful of your actions and do them at your own risk. Your best companion in this process is backing up your iPhone for safety.

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