[Q] Root for 14.4.A.0.133 C6903 topic

I am looking to root my Sony Xperia Z1 14.4.A.0.133.
I have previously rooted this device and many others and have experience with custom roms.
But I have found myself unable to root with a locked boot-loader as I am looking to restore the TA Partition of which I have backed up.
Please Help