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 Where can I download YI Action Camera App? Is there a QR code for YI 4K Action Camera? How do I update the camera firmware version? Is there a QR code for YI Action Camera? How do I upgrade the camera's firmware? Comments 0 comments Please sign in to leave a comment.