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Flashable via magisk
Link for DTS_Headphone X ( latest )
https://forum.xda-developers.com/attachment.php?attachmentid=4863315&d=1572640658
step 1 : Just press volume up all the way ( dont reboot )
step 2 : after doing that in magisk go back and the go to the upper right corner where you can see three dots from there reboot to recovery
after rebooting to recovery , reboot to system
and then
force reboot to twrp by pressing volume up and power button
then go to file manager ( advanced ) in twrp
go to data/adb/module/DTS_HPX folder then delete service.sh after deleting reboot to system
and Voilà!!! tested on OOS Q and other Android Q roms (note: if you want to uninstall HPX just flash it through twrp directly )