Same problem here :(
Made it, just reflashed and after first boot I immediately restarted phone. After that settings and phone crashed but phone didnt freeze and I got it set up. Hope you make it work too :D
Just to confirm, did you install ViPER4Android FX from Magisk Manager, and after your reboot issues it works ok? ie you see 'Processing: Yes' in ViPER4Android when playing music etc?
I've installed it via Magisk on a fairly clean TGP install, and...
Yeah, nice !!!!
One question before downloading and flashing.
Is there night mode on Oreo (Black systemsUI) ?
If not, I'll keep my current theme :p
As far as I know no, I am using High_contrast_theme_II from theme store and it works perfec...