dnt know whats wrong den.... gimme a detailed steps please.
Double check the bootloader is actually unlocked. Tiny chance something went wrong so just boot with the stock kernel and go to the service menu (Google the code for the dialer to open it) and check the device status. It should say BL unlocked / status rooted
My suggestion now is to use Flashtool and flash a full stock ftf.
Then it will be all clean. Then use fastboot to install the kernel from PC (instructions available from Sony and the kernel XDA page)
This will give you recovery on stock
Then flash Fragment. Boot. Remove superSU.
Then flash the kernel. Boot.
Flash the DRM restore. Wipe data. Boot.
Then flash SuperSU systemless
Boot.
Should work