用RedSn0w 0.9.10b1越狱前先下载iOS 5.0.1固件，用iTunes升级你的idevice固件（支持iPhone 3GS, iPhone 4, iPhone 4 CDMA, iPad 1, iPod touch 3G, and iPod touch 4G）， Shifth＋恢复，选中.ipsw文件。
支持设备的iOS 5.0.1固件下载地址：
RedSn0w 0.9.10b1 下载
redsn0w_win_0.9.10b1
点Jailbreak后按提示操作。
最新版本RedSn0w 0.9.10b1发布：越狱运行iOS 5.0.1的A4设备－ iPhone 3GS, iPhone 4, iPhone 4 CDMA, iPad 1, iPod touch 3G, and iPod touch 4G.
越狱前必须升级到iOS 5.0.1, A4的设备才能越狱，A5的还没有出来，意味着iPhone 4S, iPad 2还不能完美越狱。
The untether is for A4 devices on iOS 5.0.1 only, including the iPhone 3GS, iPhone 4, iPhone 4 CDMA, iPad 1, iPod touch 3G, and iPod touch 4G.
The untether release was a team effort. While pod2g is responsible for most of the leg work, both the Chronic and iPhone Dev teams have released jailbreaks based on his findings. Here’s everything you need to know:
The Dev Team has embedded the new untethered jailbreak into RedSn0w 0.9.10. The Chronic Dev Team has packaged the untether up in a Cydia app called Corona Untether 5.0.1 for those that are already on a tethered iOS 5.0.1 jailbreak.
Those that are already jailbroken are encouraged to download the Cydia package. It’s called Corona 5.0.1 Untether, and you should have no problem locating it. This is by far the easiest way to get an untethered jailbreak on your device. We’ve tested it on an iPhone 4 and can confirm that it works like a charm.
For those who aren’t currently jailbroken, you’ll have to use RedSn0w to do a full jailbreak. You can download RedSn0w here. As always, we will post a step-by-step tutorial on how to jailbreak using these programs as soon as possible.
Important notes:
- Folks that depend on an unlock should use the Custom IPSW option found in RedSn0w (under “Extras”) before moving forward with the jailbreak.
- There is still no jailbreak available for A5 devices, but it’s being worked on.
- This does not work for iOS 5. You will have to update to iOS 5.0.1 for this to work properly. p0sixninja says they’re still working out bugs with the iOS 5 untether.
- To learn more on how to apply the untether, see our Corona Untether 5.0.1 guide
- For jailbreak instructions, see our RedSn0w 0.9.10 tutorial
RedSn0w 0.9.10b1下载地址：RedSn0w 0.9.10 beta 1 (56)
越狱步骤：
How to Jailbreak iOS 5.0.1 Untether with RedSn0w
Step 1: Download RedSn0w 0.9.10b1 from our downloads section.
Step 2: Plug your iDevice in and put it in DFU mode.
Step 3: Launch RedSn0w and click on “Jailbreak” and select “Install Cydia”.
Let RedSn0w work its magic. In just a few moments, your iOS device should reboot and run an untethered jailbreak for iOS 5.0.1.
要用jailbreakme.com 3.0越狱iDevice, 固件版本最好已经升级为4.3.3
下面是 iOS 4.3.3 Apple网站的下载链接:
Download iOS 4.3.3 / 4.2.8 Direct Download (Official from Apple)
* iPhone 4 (GSM)
* iPhone 4, iOS 4.2.8 (Verizon)
* iPhone 3GS
* iPad 2 WiFi
* iPad 2 GSM
* iPad 2 CDMA
* iPad
* iPod touch 3G
* iPod touch 4G
How to restore or update your iPod/iPhone/iPad:
After downloading the desired firmware, you can shift-click (PC) or option-click (Mac) the Restore or Update buttons in iTunes. A file dialog will open and let you choose the downloaded ipsw-file.
怎么恢复或者升级你的iPod/iPhone/iPad？
下载固件后，在iTunes里按 shift-click (PC) 或者 option-click (Mac)点 恢复或升级按钮，出现的对话框选择你下载的ipsw文件。
iPad 2 iOS 4.3.3 越狱教程
>How To Jailbreak iPad 2 On iOS 4.3.3 & iPhone / iPad Touch Using JailbreakMe 3.0