“fpcupdeluxe-aarch64-darwin-cocoa.app” is damaged and can’t be opened. You should move it to the Trash.

[isighless]

I get the above error when trying to open the app on an Apple Silicone M1 Mac Mini.

To solve the issue, I had to run the following commands in the terminal:

cd path/to/the/directory/where/you/put/the/app
sudo codesign --force --deep --sign - fpcupdeluxe-aarch64-darwin-cocoa.app
xattr -cr fpcupdeluxe-aarch64-darwin-cocoa.app

I don't know if "Issues" is the best place to post about something I found a solution to, but it's the best I can think of.

[LongDirtyAnimAlf]

The codesigning should not be necessary anymore.
The "xattr -cr fpcupdeluxe-aarch64-darwin-cocoa.app" is still needed due to the fact that fpcupdeluxe is an external binary not originating from the app-store.
Will lock and pin this issue.