Redsnow 0.9.6rc16 has been released for iOS 4.3.3 jailbreakers. This new version serves primarily to resolve a few bugs with the prior redsn0w app, most notably with the iPhone 3GS and iPhone 4′s side switch improperly vibrating. Additional fixes resolve a problem with verbose booting on the iPhone 3GS and an issue with the Windows app crashing during the jailbreak process.
If you are already jailbroken from rc15, you can simply run rc16 over that jailbreak to apply the bug fixes. If you need a walkthrough, follow this guide to jailbreak iOS 4.3.3 with redsn0w, everything is identical.
Download Redsn0w 0.9.6rc16
These are direct downloads links:
As mentioned above, the Windows-specific bug fix pertains exclusively to those jailbreaking from Windows Visa and Win 7. These users no longer have to adjust CPU affinity of redsn0w to prevent a crash, although it still must be ran in XP mode. This does not effect Mac users.