[Sony Xperia XZ Premium Guides, News, & Discussion] TheDoh007:
Thanks for the updates :) Unfortunately it still doesn't work for me.

It gets stuck at the part where it's supposed to recognize TWRP, and then after the small manual complete shutdown and reopening of TWRP, it then continues as if it works, but my phone ends up in a bootloop.

Here are the 2 logfiles from the program:

devinfo:

05-3-2018_02-17-38 ===> Serial: CB512EZKYT

05-3-2018_02-17-38 ===> Get device product id

product: G8141

finished. total time: 0.000s

05-3-2018_02-17-38 ===> Get device firmware info

version-baseband: 1306-8499_47.1.A.8.49

finished. total time: -0.000s

routine:

5-3-2018_02-17-46 ===> Flash TWRP

target reported max download size of 536870912 bytes

sending 'recovery' (21692 KB)...

OKAY [ 0.546s]

writing 'recovery'...

OKAY [ -0.000s]

finished. total time: 0.546s

05-3-2018_02-17-52 ===> Boot TWRP

downloading 'boot.img'...

OKAY [ 0.655s]

booting...

OKAY [ 5.788s]

finished. total time: 6.443s

05-3-2018_02-21-12 ===> Mount /system

error: no devices/emulators found

05-3-2018_02-21-15 ===> List /system

error: no devices/emulators found

05-3-2018_02-21-18 ===> List credmgr files

error: no devices/emulators found

05-3-2018_02-21-19 ===> Remove credmgr files

error: no devices/emulators found

05-3-2018_02-21-20 ===> List credmgr files

error: no devices/emulators found

05-3-2018_02-21-21 ===> Pull system file

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

05-3-2018_02-21-23 ===> Push system file

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

05-3-2018_02-21-24 ===> Push lib file

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

05-3-2018_02-21-25 ===> Push lib file

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

05-3-2018_02-21-26 ===> Push lib file

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

05-3-2018_02-21-27 ===> Push lib file

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

05-3-2018_02-21-28 ===> Change file attributes

error: no devices/emulators found

05-3-2018_02-21-29 ===> Change file attributes

error: no devices/emulators found

05-3-2018_02-21-30 ===> Change file attributes

error: no devices/emulators found

05-3-2018_02-21-31 ===> Change file attributes

error: no devices/emulators found

05-3-2018_02-21-32 ===> Change file attributes

error: no devices/emulators found

05-3-2018_02-21-33 ===> Change file attributes

error: no devices/emulators found

05-3-2018_02-21-34 ===> Change file attributes

error: no devices/emulators found

05-3-2018_02-21-35 ===> Change file attributes

error: no devices/emulators found

05-3-2018_02-21-36 ===> Change file attributes

error: no devices/emulators found

05-3-2018_02-21-37 ===> Change file attributes

error: no devices/emulators found

05-3-2018_02-21-38 ===> Change file attributes

error: no devices/emulators found

05-3-2018_02-21-39 ===> Change file attributes

error: no devices/emulators found

05-3-2018_02-21-40 ===> Change file attributes

error: no devices/emulators found

05-3-2018_02-21-41 ===> Change file attributes

error: no devices/emulators found

05-3-2018_02-21-42 ===> Change file attributes

error: no devices/emulators found

05-3-2018_02-21-43 ===> Push XperiFIX Flasher

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

05-3-2018_02-21-44 ===> Push Magisk

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

05-3-2018_02-21-45 ===> Run Xperifix Flasher

error: no devices/emulators found

05-3-2018_02-21-47 ===> Flash Magisk

error: no devices/emulators found

05-3-2018_02-21-48 ===> Wipe Cache

error: no devices/emulators found

05-3-2018_02-21-49 ===> Wipe Dalvik

error: no devices/emulators found

05-3-2018_02-21-50 ===> Reboot

error: no devices/emulators found