Xperia Z1 5.1.1 Root

i got my Xperia z1 rooted with a recovery when i was using lollipop 5.0 but after i updated it to 5.1.1 i found that the root and recovery have been gone (the phone became unrooted with no recovery) :confused: ... then i tried to root it again by king root but it says no root strategy available ....

so please i need any way to root my device again .....