iPhone Dev-Team has just released Redsn0w 0.9.6RC14 which fixes @i0n1c's untether binary for those iPhone 4 users who were unable get iOS 4.3.2 untethered jailbreak using Redsn0w 0.9.6RC13. Just like previous releases, Redsn0w 0.9.6RC14 is only for those iPhone users who do not rely on an unlocked iPhone. However if you are an iPod Touch 4G/3G or 1st-Gen iPad user, Redsn0w 0.9.6RC14 is the best option to get untethered iOS 4.3.2 jailbreak on your iDevice.
Update #2: redsn0w rc14 includes the fixed i4 untether from @i0n1c. You can re-run redsn0w rc14 right over the tethered rc13b to transform the i4 JB into an untethered one.
Supported iDevices: iPhone 4, iPhone 3GS, iPod Touch 4G, iPod Touch 3G and iPad-1
The step-by-step procedure to jailbreak iOS 4.3.2 untethered on Windows and Mac OS X is exactly similar to the last release. Just download Redsn0w 0.9.6RC14 from the links below and follow this guide to jailbreak iOS 4.3.2 on your iDevice. If you rely on an unlocked iPhone, you should wait for official PwnageTool or Sn0wbreeze release which will be out sometime this week.
Update#1: Download Sn0wbreeze 2.6 for Untethered iOS 4.3.2 Jailbreak on Windows
Update#2: Download PwnageTool 4.3.2 to Jailbreak iOS 4.3.2 on Mac OS X [Tutorial]
Update#3: Download Ultrasn0w 1.2.2 to Unlock iPhone 4/3GS on iOS 4.3.2 [How-To Guide]
Download iTunes 10.2.2 for Windows & Mac OS X
Download iOS 4.3.2 for iPhone 4/3GS, iPod Touch 4G/3G & iPad 2,1st-Gen
Download Redsn0w 0.9.6RC14 for Windows [MediaFire Mirror]
Download Redsn0w 0.9.6RC14 for Mac [MediaFire Mirror]