Where can I find and download the YI Action app? You can find and download our YI Action app on Apple's App Store (iOS) and Google's Play Store (Android) separately. Related articles Is there a QR code for YI 4K+ Action Camera? What are the requirements for my microSD card? How do I update the camera firmware version? Where can I find and download the latest firmware? Download YI Home app (iOS, Android) Comments 0 comments Please sign in to leave a comment.