Primebook - Before releasing PrimeOS 2.0, we have come up with a stable update of PrimeOS 0.5.0 (Android 7.1) Download Now (www.primeos.in) and let us know the feedback over our various community
Experience the Power of PrimeOS with Primebook Laptops!
ROM][BETA] PrimeOS 2.1.0 for Rpi4 and Pi4B | XDA Forums
Info - About prime OS update from official | Android on PC