Absinthe

Absinthe is an untethered jailbreak for A5 devices based on the 'corona' exploit.
SYSTEM REQUIREMENTS:
- MacOSX 10.5/10.6/10.7
- Windows XP/Vista/7
- Linux x86/x86_64 (Kernel >= 2.6.15, libgtk -2.0 >= 2.22.1)
SUPPORTED DEVICES/FIRMWARE:
- iPhone4S
(GSM/CDMA) iOS 5.0 -9A334
iOS 5.0.1 -9A405
-9A406
- iPad2
(WiFi/3G) iOS 5.0.1 -9A405