UPDATE 3: iH8sn0w has fixed sn0wbreeze with its update to v1.4. The program is now compatible with old bootrom iPhone 3GS read our guide for more info and download links:
UPDATE 2: iH8sn0w has removed his sn0wbreeze download until it is fixed for the iPhone 3GS. We'll update again when a fixed version is released . . .
Cash UPDATE: I'm telling you now, don't bother with this right now. #1 3.1.3 isn't worth it. #2 sn0wbreeze isn't as finished as it should have been before they released it. Many of you will ignore our advice and do wtvr anyways so I WILL get a guide up, if I find a trick to making sn0wbreeze work! If I do make a guide, it WILL NOT be for the iPhone 3GS, after many repeated tries with different .ipsw files made with sn0wbreeze I am fairly convinced that sn0wbreeze is not compatible with 3GS 3.1.3 firmware.
Well folks, that didn't take long at all. We now have the ability to jailbreak and unlock the iPhone on the new OS 3.1.3 only days after it's release. We have two options for different basebands, 04.26.08 and 05.11.07.
Sn0wbreeze 3.1.3 can jailbreak iPhone 2G, 3G and iPhone 3GS (old bootrom only) on iPhone OS 3.1.3. (Guide to follow.) It also jailbreaks the iPod Touch 1G and iPod Touch 2G (model number not starting with MC). Baseband 04.26.08 can be unlocked using Ultrasn0w. If your baseband is 05.11.07, GeoHot's blacksn0w will work just the same as it did before. (That was released last year
For those of you that have never used any of these programs, please head over to our guides
section. Note: We have NOT
tested this method. Be smart. Don't do this unless you absolutely have to, or if you want to test and inform others of your success/failure stores
Again, THIS IS FOR OLD BOOTROMS OF THE 3GS. If you have jailbroken 3.1.2 previously and the jailbreak was untethered you have the old bootrom. If you have a newer 3GS, just stay away.
A couple notes. iPhone 3GS and iPod Touch 2G users check your model number Settings -> General -> About. If it starts with MC don't try any 3.1.3 jailbreak.
Next, for those of you that do not know, sn0wbreeze is a custom .ipsw creator for Windows much like the dev team's pwnagetool is for Mac. There are things you need to be aware of because of this. First of all grab the correct firmware for your device. Making a custom .ipsw for the wrong device will do you no good. Second the custom 3.1.3 firmware you create with sn0wbreeze is restored to your device via iTunes. Do not use DFU mode, normal recovery mode should be sufficient. Last and most important YOU CAN NOT restore the custom .ipsw that sn0wbreeze makes on to your device unless you device is ALREADY jailbroken. If you aren't jailbroken then jailbreak your current firmware (under 3.1.3) using the software of your choice (redsn0w, balckra1n, pwnagetool, wtvr), then create the custom 3.1.3 .ipsw with sn0wbird, then restore it on to your device using normal recovery mode and iTunes.
After you have restored your custom 3.1.3 firmware on to your device you can unlock. iPhone 2G users search for bootneuter in cydia. Users with baseband 04.26.08 search for ultrasn0w in cydia. Baseband 05.11.07 users add the repo blackra1n.com to Cydia and search for blacksn0w.
I have not tried this jailbreak yet so try at your own risk. We'll get a guide up asap assuming everything is working fine (read in 6 hrs when I wake up).
Official 3.1.3 Firmware directly from Apple:
Download iPhone 3.1.3 firmware for iPhone 2G
Download iPhone 3.1.3 firmware for iPhone 3G
Download iPhone 3.1.3 firmware for iPhone 3GS
Download 3.1.3 firmware for iPod Touch 1G
Download 3.1.3 firmware for iPod Touch 2G
Download .NET Framework 3.5
(required to run Sn0wbreeze)
Sn0wbreeze downloads all pulled. IF you find a download, don't use it. We will make a new news post if/when the program is fixed.
Join in on IRC
for more information