What Does Tethered Jailbreak Mean :
Tethered jailbreak means you will have to use redsn0w to enter DFU mode and have it “just boot tethered” every time you power cycle your device.
Important Note: iPhone users, if you rely on unlock you MUST stay away from iOS 5 update, it will break your unlock as it will upgrade your iPhone baseband to one that can't be unlocked. Dev-team will release Redsn0w 0.9.9b5 to let unlockers able to upgrade to iOS 5 with preserving the unlockable basebands.
Jailbreak iOS 5 - Supported devices :
- iPod touch 3G
- iPod touch 4G
- iPad 1
- iPhone4 (GSM)
- iPhone4 (CDMA)
- Download Redsn0w 0.9.9b4 for Windows / Mac
- Download iOS 5.0 iPhone,iPod, iPad
- Download iTunes 10.5 for Windows and Mac
Jailbreak iOS 5 - iPhone 4, 3GS,iPod Touch 4G, 3G, iPad [Tutorial] :
Step 1: Connect your iDevice with your PC via USB, and open iTunes 10.5 then Restore to iOS 5.0
Step 2: Start Redsn0w, press on "Extras > Select IPSW" and point it to iOS 5.0 firmware ipsw file.
Step 3: Now select “Install Cydia” and click “Next”. Optionally (if available), you can also select any other option you like.
Step 5: Wait until you get iOS 5.0 jailbroken in few minutes. Congratulations.
Tethered Jailbreak : Once current Redsn0w jailbreak is still tethered jailbreak, you will be required to connect your iOS device with your computer and run Redsn0w again then choose "Just boot tethered right now".