Coverage chart / MacMD Viewer

Keep MacMD Viewer up to date on your Mac

MacMD Viewer is covered by Floodtide. It shows up in your update list the moment a newer version ships, and updates in one click along with everything else on this Mac. MacMD Viewer can also update itself, but only once you open it, and only itself.

How MacMD Viewer gets updated

Floodtide reads the Homebrew catalog, a community-maintained index of Mac software, to learn which version of MacMD Viewer is current. When yours is behind, the row appears under Updates with the version it will move to and the download size. Pressing Update, or Update All, does the rest:

  • The vendor's own build is downloaded, several apps at a time, with real progress.
  • The download is verified against the checksum the catalogue publishes.
  • MacMD Viewer is asked to quit politely if it is open, and never forced.
  • The bundle is swapped and the old version kept for seven days, so Undo Last Update always works.
  • The replacement's code signature is checked; a build signed worse than the one you had is rolled back automatically.

Every download of MacMD Viewer is checked against the checksum Homebrew publishes before anything is replaced.

If MacMD Viewer lives in a folder macOS protects, the swap asks for your administrator password once for the whole batch, exactly as the Finder does when you install anything by hand.

Questions about MacMD Viewer

Does Floodtide update MacMD Viewer?

Yes. MacMD Viewer also ships its own updater, so it can keep itself current when you launch it. Floodtide covers it anyway, because a self-updating app only updates when you happen to open it, and it tells you nothing about the other apps on the Mac. Floodtide shows MacMD Viewer beside everything else and updates the whole set in one pass.

How does Floodtide install a new version of MacMD Viewer?

It downloads the vendor's official build, verifies it against the checksum the catalogue publishes, quits MacMD Viewer if it is running, swaps the bundle, and keeps the previous version for seven days so the update can be undone.

Will updating MacMD Viewer lose my settings?

No. Floodtide replaces the application only. Preferences, licences and documents live outside it and are untouched.