Thanks pod2g and Chronic-Dev Team for Absinthe 2.0, a long time for 5.1.1 jailbreak.
There are a number of iPhone themes compatible 5.1.1: http://www.ithemesky.com/iphone-themes/new/1/5.1.1
There are a number of iPhone themes compatible 5.1.1: http://www.ithemesky.com/iphone-themes/new/1/5.1.1