mobile

I tried updating my xperia z2 to lollipop but it keeps restarting, doesn't go past Sony logo. I have tried 2 different lollipop versions 23.1.A.0.690 and 23.1.A.0.726 both were pre-rooted with recovery files. I can flash ftf files with the flash tool without any issues and successfully boot into lollipop. What am I doing wrong? I am coming from 4.4.4 rooted with dualrecovery installed.