Update #3: For the convenience of kernel hackers like @comex and @i0n1c, we have a new redsn0w 0.9.8b3 that supports a TETHERED jailbreak for iOS 4.3.4 on all devices that have 4.3.4 except the iPad2. The vast majority of people will want to stay back at 4.3.3 because that’s where the untethered jailbreak is! There are no new features in 4.3.4 — only fixes for jailbreak exploits
•redsn0w 0.9.8b3 for Mac
•redsn0w 0.9.8b3 for Windows
•redsn0w 0.9.8b3 for Mac
•redsn0w 0.9.8b3 for Windows