Warning: Spirit Jailbreakers: Do Not Update while using the Spirit JB Exploit. Use RedSn0w, PwnageTool, or Sn0wBreeze to jailbreak first, and THEN you may use these new tools.
Yesterday we had the release of PwnageTool 4.01 for Mac, from the Dev-Team, which allowed you to make custom iOS 4 firmwares ready for jailbreaking. Only a day later, we now have Windows support for creating custom jailbroken firmwares, with Sn0wBreeze 1.6
Just like RedSn0w, you will have the additional functionality options for the iPhone 3G and iPod Touch 2G, for multitasking and wallpapers. The same rules apply for Sn0wBreeze 1.6 as does PwnageTool. Certain devices are not supported. This is simply due to the fact that the hardware is not supported in iOS 4.0. The Phone 2G, iPod Touch, iPod Touch 3G are not supported. Neither is the iPhone 3GS with the new Bootrom, the MC models.
If you have an iPhone 3GS, Sn0wbreeze 1.6 only works on previously jailbroken 3GS devices with the old bootrom. If you have a Jailbroken iPhone 3GS with the OLD BOOTROM and you DID NOT use Spirit to jailbreak, then you can create the custom firmware with Sn0wbreeze 1.6 and restore this ipsw with your jailbroken iPhone, while in recovery mode.
If you have a Jailbroken iPhone 3G at 3.1.2 (but not jailbroken with Spirit) then you can create the firmware with Sn0wBreeze and restore your iPhone 3G from recovery mode or DFU mode. If you have an out of the box iPhone 3G you should restore using a Sn0wbreeze’s DFU mode. If you have a Jailbroken 3.1.3 iPhone 3G it is very possible that this can fail from recovery mode, if this failure happens you will need to restore using DFU mode.
Just like PwnageTool, you can add custom packages, which means you can include ultrasn0w along with the firmware so that you won’t need Wi-Fi access to install it later. So basically everything that was offered on the Mac side with PwnageTool, is now available on the Windows side via Sn0wBreeze.
Let us recap real quick. Here is a list of supported devices:
iPhone 3GS (old bootrom, non MC model, not spirit jailbroken)
iPhone 3G (might require DFU,)
iPod 2G (non MC model, not spirit jailbroken)
In almost every case, you need to be previously jailbroken except for the 3G, but you must NOT be jailbroken with Spirit (on 3.1.2 this might work, but 3.1.3 has issues).
Sorry guys, still no support for newer model iPhone 3GS. Stick to 3.1 for now.