Use APKPure App
Get Oneplus Manager old version APK for Android
Where you can get ROMS, Kernels, Mods, Recoveries, etc for your OnePlus
Through this app you can easy browse and download Roms, Kernels, Recoveries, Mods, Apps, Tools/Utilities. And you can easy share/get invites though this app.
"If you think this application is useful or helped you in anyway, please write a review, it means a lot to us"