iOS 5 Custom Firmware & Ultrasn0w Unlock With Sn0wbreeze 2.8b1 [JAILBREAK GUIDE]



Just as Redsn0w was updated earlier today by Dev-Team for Windows users to support iOS 5 beta jailbreak for developers, an update to Windows exclusive baseband preservation tool i.e sn0wbreeze 2.8b1 has also been released. For those who don’t know, sn0wbreeze is a custom firmware creation tool for Windows users like PwnageTool for Mac and supports iPhone 4 (GSM + CDMA), iPhone 3GS, iPod touch 3G/4G and iPad. It can now build an iOS 5 custom firmware while at the same time, preserving your current baseband to allow ultrasn0w unlock for iPhone 4 / 3GS on supported bands.

Simply follow our step-by-step guide below to create iOS 5 custom firmware and jailbreak your device without a baseband update. Please remember, this is a “tethered” jailbreak via iBooty meaning you need to be plugged into your computer each time you reboot / restart your device.

*Disclaimer*: iTD is NOT responsible for anything that happens to your device while following this guide. Those who do so do it at their own risk.

*Warning*: This sn0wbreeze does NOT add afc2 or Hacktivate to prevent users from removing the UDID check after jailbreak.

Step 1:

Download sn0wbreeze 2.8b1 here.

Download iOS 5 beta 1 for your device through your developer’s account.

Download iTunes 10.5 beta, once again using your developer account.

Step 2:

Once you’ve downloaded iOS 5 beta 1 for your device, save it somewhere you can find it, preferably your desktop.

Step 3:

Run sn0wbreeze 2.8b1. Click “OK” and you should see the latest sn0wbreeze splash screen as shown below:

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Step 4:

Click the blue arrow on the bottom right and browse / select your respective iOS 5 firmware. Let sn0wbreeze analyze the firmware fille, then click the arrow again.

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Step 5:

Once identified successfully, select “Expert Mode” and click the next arrow. Select “Build IPSW” and hit the next arrow once more.

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Step 6:

Let sn0wbreeze cook your custom iOS 5 firmware.

Step 7:

Once sn0wbreeze finishes, it will assist you in booting your device in DFU mode. The steps are as follows:

  • Connect your device via USB
  • Power down your device
  • Hold the Power and Home buttons for 10 seconds
  • Release the Power button but keep holding the Home button for 10 seconds.
  • Your device will now be in DFU mode

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Step 8:

Restore your device with iTunes, while keeping sn0wbreeze open. Hold Shift while clicking “Restore” and browse to the custom iOS 5 firmware file created by sn0wbreeze.

Step 9:

Wait for iTunes to finish restoring. Make sure not to accidentally disconnect your device. After the restoration is complete, your iOS device will be restored to iOS 5 beta 1.

Step 10:

In order to boot tethered, open the “iBooty” folder add to your Desktop and launch “iBooty.exe”. Select your device from the bottom-left drop-down menu, and then click “Start”.

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Step 11:

Follow the on-screen instructions to put your device in DFU mode, just like in Step 7.

Step 12:

Once your device is in DFU mode, let iBooty do the rest. When your device boots, it will be jailbroken on iOS 5.

Enjoy!

**Carrier Unlock: If your device has a supported baseband, use this guide to unlock it with ultrasn0w 1.2.2.

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I’m a technology enthusiast specializing in Diagnostic Radiology. I’m crazy about Formula 1, all sorts of gadgets, surfing, console gaming, movies, music & I simply LOVE high-end designer wear! Follow me on Twitter @DrUsmanQ