Tip
Method 1 resolves the issue for ~85% of cases, and Method 2 covers ~90%. If none of the methods work, please let us know in our community.
Guide · macOS
Fix the macOS 'damaged' error
Because FluxDown is not signed with an Apple certificate, macOS may block it from opening. The steps below will help you get it running.
Back to Downloads Last updated: 2025
Allow apps from Anywhere
recommended-
Open System Settings → Privacy & Security → General and check whether the 'Anywhere' option is already enabled.
-
If the option is missing, open Terminal and run the command below, then press Return and enter your password:
sudo spctl --master-disable -
After the command completes, go back to System Settings → Privacy & Security and you will see 'Anywhere' is now enabled.
Remove the quarantine flag
if still blocked-
If enabling 'Anywhere' is not enough, use the following command to remove the quarantine attribute from the app:
sudo xattr -rd com.apple.quarantine /Applications/FluxDown.appReplace FluxDown.app with your actual app name, or drag the app from Finder into the Terminal window after the command. Make sure there is a space after quarantine.
Local code signing
last resort-
First install Command Line Tools:
xcode-select --install -
Click Continue in the installer window and wait for it to finish. Then run the command below to sign the app locally:
sudo codesign --force --deep --sign - /Applications/FluxDown.appReplace the app path with the actual path. You can drag the app from Finder → Applications into the Terminal window.