Finally... i made it WORKS 
Thats the way i ROOT my 14.6.A.0.368 firmware with LOCKED bootloader.
1. Installed KingRoot V4.6.0 128 and rooted with it
2. Installed Super-Sume Pro v9.1.9 and this program replaced KingRoot with SuperSU
3. Downloaded Z1C-lockeddualrecovery2.8.22-RELEASE.flashable.zip <- This is not mistake, you need FLASHABLE version... yes i know you don't have active recovery to flash it.
4. Install Flashfire from http://flashfireapk.com/ and flash the recovery zip with it...
5. Enjoy
P.s. may be you will need RIC Disabler/Killer also... i have installed it before, but doesn't noticed it do something
Please thank or just write something to approve this works for you
OLD: "Hello there. After update with Sony PC Companion i have lost my root access. Today KingRoot rooted my phone again... now it time to install dual recovery and back to SuperSU.
Cheers
UPDATE: I have replaced KingRoot SU app with help of Super-Sume Pro v9.1.9 and now i have SuperSU installed and working fine, but... still can't use Z1C-lockeddualrecovery2.8.22-RELEASE.installer or XZ-lockeddualrecovery2.8.22-RELEASE.installer. They installed fine, but after reboot phone show RED light WITHOUT vibration and no matter i press UP or DOWN i can't enter recovery and boots android."
Thats the way i ROOT my 14.6.A.0.368 firmware with LOCKED bootloader.
1. Installed KingRoot V4.6.0 128 and rooted with it
2. Installed Super-Sume Pro v9.1.9 and this program replaced KingRoot with SuperSU
3. Downloaded Z1C-lockeddualrecovery2.8.22-RELEASE.flashable.zip <- This is not mistake, you need FLASHABLE version... yes i know you don't have active recovery to flash it.
4. Install Flashfire from http://flashfireapk.com/ and flash the recovery zip with it...
5. Enjoy
P.s. may be you will need RIC Disabler/Killer also... i have installed it before, but doesn't noticed it do something
Please thank or just write something to approve this works for you
OLD: "Hello there. After update with Sony PC Companion i have lost my root access. Today KingRoot rooted my phone again... now it time to install dual recovery and back to SuperSU.
Cheers
UPDATE: I have replaced KingRoot SU app with help of Super-Sume Pro v9.1.9 and now i have SuperSU installed and working fine, but... still can't use Z1C-lockeddualrecovery2.8.22-RELEASE.installer or XZ-lockeddualrecovery2.8.22-RELEASE.installer. They installed fine, but after reboot phone show RED light WITHOUT vibration and no matter i press UP or DOWN i can't enter recovery and boots android."
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