Ansinthe Jailbreak Iphone 4 with 5.1.1?

How reliable is Absynthe software for iphone Jailbreak with iOS 5.1.1. And will I be able to keep my apps and data after I jailbreak it?

Will I be able to put Siri on my Iphone 4 after jailbreaking?

Absinthe is what I have. My phone has been jailbroken for 10 months. Nothing bad has happened. It is very reliable. Yes make a backup before you jailbreak in iTunes. After you jailbreak, click restore from backup in itunes. It will stay jailbroken. Yes you can get Siri. It's too hard to explain. Look up hot to get Siri through spire. Hope this helped

Absithe is the best for 5.1.1 jailbreak.