How do I upgrade the App? Android users can manually check for upgrades by tapping the 'About Us' tab from the App. Both iPhone and Android users will automatically receive notifications if an upgrade is available. Related articles Where can I find and download the YI Mirrorless app? How do I upgrade my firmware? How do I know my firmware version? How do I share photos downloaded to the App? Where can I find and download the latest firmware? Comments 0 comments Please sign in to leave a comment.