[Sony Xperia XZ Premium Guides, News, & Discussion] vingbombadao:
it seems that the driver from sony site was already installed in my computer https://imageshack.com/a/img924/62/Qo7Cso.png "the best drivers for your device are already installed"

bootloader unlocked

https://imageshack.com/a/img922/3492/3MiD2w.jpg

usb debbugging

https://imageshack.com/a/img924/3453/6WsLHT.jpg

xperifix recognize my phone

https://imageshack.com/a/img922/3214/Ctdlpu.png

then its done

https://imageshack.com/a/img923/1856/dzxCxD.png

but nothing happens to my phone

this is the log

19-3-2018_09-01-52 ===> Flash TWRP

target reported max download size of 536870912 bytes

sending 'recovery' (21692 KB)...

OKAY [ 0.697s]

writing 'recovery'...

FAILED (remote: Flashing is not allowed in Lock State)

finished. total time: 0.698s

19-3-2018_09-01-58 ===> Boot TWRP

downloading 'boot.img'...

OKAY [ 0.824s]

booting...

FAILED (remote: Command not allowed)

finished. total time: 0.825s

19-3-2018_09-02-17 ===> Mount /system

error: no devices/emulators found

19-3-2018_09-02-20 ===> List /system

error: no devices/emulators found

19-3-2018_09-02-23 ===> List credmgr files

error: no devices/emulators found

19-3-2018_09-02-24 ===> Remove credmgr files

error: no devices/emulators found

19-3-2018_09-02-25 ===> List credmgr files

error: no devices/emulators found

19-3-2018_09-02-27 ===> Pull system file

adb: error: failed to get feature set: no devices/emulators found

19-3-2018_09-02-28 ===> Push system file

adb: error: failed to get feature set: no devices/emulators found

19-3-2018_09-02-29 ===> Push lib file

adb: error: failed to get feature set: no devices/emulators found

19-3-2018_09-02-30 ===> Push lib file

adb: error: failed to get feature set: no devices/emulators found

19-3-2018_09-02-31 ===> Push lib file

adb: error: failed to get feature set: no devices/emulators found

19-3-2018_09-02-32 ===> Push lib file

adb: error: failed to get feature set: no devices/emulators found

19-3-2018_09-02-34 ===> Change file attributes

error: no devices/emulators found

19-3-2018_09-02-35 ===> Change file attributes

error: no devices/emulators found

19-3-2018_09-02-36 ===> Change file attributes

error: no devices/emulators found

19-3-2018_09-02-37 ===> Change file attributes

error: no devices/emulators found

19-3-2018_09-02-38 ===> Change file attributes

error: no devices/emulators found

19-3-2018_09-02-39 ===> Change file attributes

error: no devices/emulators found

19-3-2018_09-02-40 ===> Change file attributes

error: no devices/emulators found

19-3-2018_09-02-42 ===> Change file attributes

error: no devices/emulators found

19-3-2018_09-02-43 ===> Change file attributes

error: no devices/emulators found

19-3-2018_09-02-44 ===> Change file attributes

error: no devices/emulators found

19-3-2018_09-02-45 ===> Change file attributes

error: no devices/emulators found

19-3-2018_09-02-46 ===> Change file attributes

error: no devices/emulators found

19-3-2018_09-02-47 ===> Change file attributes

error: no devices/emulators found

19-3-2018_09-02-48 ===> Change file attributes

error: no devices/emulators found

19-3-2018_09-02-49 ===> Change file attributes

error: no devices/emulators found

19-3-2018_09-02-50 ===> Push XperiFIX Flasher

adb: error: failed to get feature set: no devices/emulators found

19-3-2018_09-02-51 ===> Push Magisk

adb: error: failed to get feature set: no devices/emulators found

19-3-2018_09-02-53 ===> Run Xperifix Flasher

error: no devices/emulators found

19-3-2018_09-02-54 ===> Flash Magisk

error: no devices/emulators found

19-3-2018_09-02-55 ===> Wipe Cache

error: no devices/emulators found

19-3-2018_09-02-56 ===> Wipe Dalvik

error: no devices/emulators found

19-3-2018_09-02-57 ===> Reboot

error: no devices/emulators found