SHA-1 校验值
PwnageTool Mac 版：9e8ce7d4eb79b5f839efa0233893ef1a6a5e3c5c
PwnageTool Windows 版：暂未发布
RedSn0w Mac 版：8a71038cf49efe45bf156ad00290ece9cd19db68
RedSn0w Windows 版：b6c0409801fcc3d06024df59d052a3ecdd521ea3
MD5 校验值
PwnageTool Mac 版：c0fd962542a94e27af8f75c794365331
PwnageTool Windows 版：暂未发布
RedSn0w Mac 版：965e0a1dfd1450691a66e647dd15a283
RedSn0w Windows 版：1e2a46e773a24bccd8c0ff0cf6981bee
Three years ago (almost to the day!), the first version of PwnageTool was released for firmware 1.1.4. So today we’re excited to release another edition of both PwnageTool and redsn0w to bring an untethered jailbreak for Apple’s latest firmware, FW 4.3.1.
WARNING WARNING — ultrasn0w users don’t update yet! See a few paragraphs down!
警告：ultrasn0w 用户请暂时不要升级！见下文
The 4.3.1 untether exploit comes courtesy of Stefan Esser (@i0n1c on twitter), a security researcher based in Germany. Stefan has a long history of vulnerability research, and ironically his first contribution to the iPhone jailbreak community was improved security — last year he beat Apple to the punch and implemented ASLR for jailbroken iPhones with his “antid0te” framework. We’re happy to see that Stefan then turned his iPhone attention over to an untethered jailbreak exploit!
4.3.1 的完美越狱漏洞来自 Stefan Esser（@i0n1c），一位德国的安全专家。Stefan 已经在漏洞方面做了很长时间的研究了，有讽刺意味的是，他对越狱团队所作的第一次贡献是增强安全性——去年他删了苹果一耳光，用他的 antid0te 构架为越狱过的 iPhone 添加了 ASLR。我们非常高兴他把重点转向了完美越狱漏洞！
The 4.3.1 untether works on all devices that actually support 4.3.1 except for the iPad2:
4.3.1 完美越狱支持所有运行 iOS 4.3.1 的设备（iPad 2 除外）
iPhone3GS
iPhone4 (GSM)
iPod touch 3G
iPod touch 4G
iPad1
AppleTV 2G (PwnageTool only for now)
The reason the untether won’t work as-is on the iPad2 is that it requires a bootrom or iBoot-level exploit to install, and the iPad2 is not susceptible to either the limera1n or SHAtter bootrom exploits.
WARNING WARNING — ultrasn0w users don’t update yet! We need to first release an update to ultrasn0w that fixes some incompatibilities when FW 4.3.1 is used on the older basebands supported by ultrasn0w. And remember once we do fix ultrasn0w for 4.3.1 (we’ll announce it here and on twitter), you must only get there via a custom IPSW from PwnageTool, Sn0wbreeze or xpwn! Don’t ever try to restore or update to a stock IPSW, or you’ll lose the unlock!
For everyone else, redsn0w is the easier program to use (and redsn0w runs on both Mac and Windows). Please check out places like iClarified for some excellent guides on how to use both PwnageTool and redsn0w.
Feel free to ask for help in our comments section. Thanks once again to our fantastic moderators for volunteering their time and knowledge and keeping order: Confucious, sherif_hashim, dhlizard, Frank55, and subarurider!