If you have Bloatware because of Branded Z1 then is not safest way just Update your phone with a Unbranded FTF?
IF I HELPED DO NOT SAY THANKS, CLICK IT.
My Evolution: Sony Xperia Z1 - UB + 4.3 Rooted + Deodexed, HTC HD2, HTC Diamond 2, HTC HD Blackstone, Nokia 7070 Prism, Qtek 9100, Nokia 3100, Motorola T720i, Nokia 3310, Sony Ericson PF 768 (Blue)

How Get Root on Sony Xperia Z1 with Locked Bootloader and the Latest Android 4.4