Troubleshooting & messages · Updates and installing
What does "Apple notarization check failed on the downloaded update" mean?
Short answer: The downloaded update didn't pass Apple's genuineness check (usually incomplete or damaged), so it wasn't installed. Retry, or use Open download in browser for a fresh copy.
Before installing an update, Storage Studio confirms with macOS that the download is genuine and approved by Apple. This download didn't pass — usually because it was incomplete or damaged on the way. It was not installed.
Try the update again. If it fails again, use Open download in browser to download a fresh copy from storagestudio.us and install it by dragging it to Applications.