[Sony Xperia XZ2 ROMs, Kernels, Recoveries, & Other] der.lange:
Cause I need my banking SW (S-pushTAN) every day and I found out, that it is not running for me under LOS, I had to find a solution with a minimum of bloatware: I flashed my H8324 with H8324_Customized DE_52.1.A.3.49-R3C from scratch and TWRP with the method mentioned above successfully. With a small and effective simple script (somewhere found on XDA) I got rid of the bloatware:

run `adb shell`

insert by copy and paste (debloat-remover-non-roo-xperia.txt)

pm uninstall -k --user 0 com.amazon.mShop.android.shopping

pm uninstall -k --user 0 com.sonymobile.advancedlogging

pm uninstall -k --user 0 com.sonymobile.anondata

pm uninstall -k --user 0 com.sonymobile.aptx.notifier

pm uninstall -k --user 0 com.android.dreams.basic

pm uninstall -k --user 0 com.google.android.calendar

pm uninstall -k --user 0 com.amazon.kindle

pm uninstall -k --user 0 com.s.antivirus

pm uninstall -k --user 0 com.sonyericsson.xhs

pm uninstall -k --user 0 com.sonymobile.xperialounge.services

pm uninstall -k --user 0 com.sonymobile.demoappchecker

pm uninstall -k --user 0 com.sonymobile.deviceconfigtool

pm uninstall -k --user 0 com.google.android.apps.docs

pm uninstall -k --user 0 com.google.android.apps.tachyon

pm uninstall -k --user 0 com.android.facelock

pm uninstall -k --user 0 com.sonymobile.music.googlelyricsplugin

pm uninstall -k --user 0 com.google.android.printservice.recommendation

pm uninstall -k --user 0 com.android.htmlviewer

pm uninstall -k --user 0 com.sonyericsson.idd.agent

pm uninstall -k --user 0 com.sonymobile.intelligent.observer

pm uninstall -k --user 0 com.android.keychain

pm uninstall -k --user 0 com.google.android.apps.maps

pm uninstall -k --user 0 com.google.android.music

pm uninstall -k --user 0 com.android.providers.partnerbookmarks

pm uninstall -k --user 0 com.google.android.apps.photos

pm uninstall -k --user 0 com.sonymobile.email

pm uninstall -k --user 0 com.sonyericsson.warrantytime

pm uninstall -k --user 0 com.sonymobile.prediction

pm uninstall -k --user 0 com.sonymobile.xperiaservices

pm uninstall -k --user 0 com.sonymobile.synchub

pm uninstall -k --user 0 com.google.android.videos

pm uninstall -k --user 0 com.sonymobile.music.wikipediaplugin

pm uninstall -k --user 0 com.sonymobile.xperiatransfermobile

pm uninstall -k --user 0 com.sonymobile.music.youtubekaraokeplugin

pm uninstall -k --user 0 com.sonymobile.music.youtubeplugin

pm uninstall -k --user 0 com.sonyericsson.android.addoncamera.artfilter

pm uninstall -k --user 0 com.sonymobile.assist.persistent

pm uninstall -k --user 0 com.sonymobile.assist

pm uninstall -k --user 0 com.android.backupconfirm

pm uninstall -k --user 0 com.android.calllogbackup

pm uninstall -k --user 0 com.sonymobile.cameracommon.wearablebridge

pm uninstall -k --user 0 com.sonymobile.retaildemo

pm uninstall -k --user 0 com.sonymobile.getset

pm uninstall -k --user 0 com.sonymobile.getset.priv

pm uninstall -k --user 0 com.google.android.backuptransport

pm uninstall -k --user 0 com.google.android.feedback

pm uninstall -k --user 0 com.android.inputdevices

pm uninstall -k --user 0 com.sonymobile.intelligent.backlight

pm uninstall -k --user 0 com.android.musicfx

pm uninstall -k --user 0 com.sonyericsson.android.omacp

pm uninstall -k --user 0 com.android.sharedstoragebackup

pm uninstall -k --user 0 com.sonymobile.simlockunlockapp

pm uninstall -k --user 0 org.simalliance.openmobileapi.service

pm uninstall -k --user 0 com.sonymobile.smartcharger

pm uninstall -k --user 0 com.sonymobile.android.addoncamera.soundphoto

pm uninstall -k --user 0 com.sonyericsson.startupflagservice

pm uninstall -k --user 0 com.android.stk

pm uninstall -k --user 0 com.android.apps.tag

pm uninstall -k --user 0 com.sonyericsson.mtp.extension.backuprestore

pm uninstall -k --user 0 com.sonyericsson.mtp.extension.factoryreset

pm uninstall -k --user 0 com.sonymobile.mtp.extension.fotaupdate

pm uninstall -k --user 0 com.sonyericsson.mtp.extension.update

pm uninstall -k --user 0 com.sonyericsson.mtp

pm uninstall -k --user 0 com.sonyericsson.wappush

pm uninstall -k --user 0 com.amazon.avod.thirdpartyclient

pm uninstall -k --user 0 com.sonymobile.cellbroadcast.notification

pm uninstall -k --user 0 com.sonyericsson.unsupportedheadsetnotifier

pm uninstall -k --user 0 com.google.android.youtube

pm uninstall -k --user 0 com.google.android.googlequicksearchbox

pm uninstall -k --user 0 com.whatsapp

pm uninstall -k --user 0 com.google.android.marvin.talkback

pm uninstall -k --user 0 com.instagram.android

pm uninstall -k --user 0 com.facebook.services

pm uninstall -k --user 0 com.sonymobile.support

pm uninstall -k --user 0 com.facebook.katana

pm uninstall -k --user 0 com.facebook.orca

pm uninstall -k --user 0 com.facebook.system

pm uninstall -k --user 0 com.facebook.appmanager

pm uninstall -k --user 0 com.sony.tvsideview.videoph

pm uninstall -k --user 0 com.android.hotwordenrollment.okgoogle

pm uninstall -k --user 0 com.google.android.gm

pm uninstall -k --user 0 com.google.android.tts

pm uninstall -k --user 0 com.google.ar.lens

pm uninstall -k --user 0 com.sonyericsson.textinput.chinese

pm uninstall -k --user 0 com.sonymobile.android.externalkeyboardjp

pm uninstall -k --user 0 com.sonymobile.coverapp2

pm uninstall -k --user 0 com.sonymobile.dualshockmanager

pm uninstall -k --user 0 com.sonymobile.glovemode

pm uninstall -k --user 0 com.sonymobile.pip

pm uninstall -k --user 0 com.sonymobile.pobox

pm uninstall -k --user 0 com.sonymobile.moviecreator.rmm

pm uninstall -k --user 0 com.sonymobile.entrance

pm uninstall -k --user 0 com.spotify.music

pm uninstall -k --user 0 com.android.chrome

pm uninstall -k --user 0 com.android.partnerbrowsercustomizations.chromeHomepage

pm uninstall -k --user 0 com.sonymobile.scan3d

pm uninstall -k --user 0 com.sonymobile.xperiaweather

pm uninstall -k --user 0 com.amazon.clouddrive.photos

That`s it!

btw: TWRP starts soft or hard and Backup is running fine.