Builds from r1 up to r12 are for Android 7.1.1 Nougat OxygenOS based roms only.
Builds from r13 are for Android 8.0.0 Oreo OxygenOS based roms only.
Builds starting with r18 work with Android 8.1.0 Custom roms.
Builds starting with r28 up to r32 work with OxygenOS 5.1.0 Android 8.1.0
Builds starting with r33 work with OxygenOS 5.1.5 Android 8.1.0
Builds starting with r40 are for OxygenOS 9.0 Android Pie.
Builds starting with r44 are also available for custom roms such as LineageOS.
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.
Follow me on socials for updates and interesting tidbits
FK Kernel Manager video
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.