Builds starting with r14 work with OxygenOS 9.0 Android 9 Pie
Builds starting with r15 also work with custom roms such as LineageOS & others.
Flash the zip in your recovery
Auto-flash from FK Kernel Manager app, it's magical
Scroll down, choose your device & select the latest release to see the changelog.
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Disclaimer to moderators:
Slight OT is fine, but when users decide to act stupid they should be dealt with with the appropriate means - its really annoying for me when OT turns crazy. Please put the warning/ban hammer anytime any of you think there's lack of respect and/or too much unwanted OT crap - but if it doesn't meet this criteria let the OT posts alone. Thank you.