After upgrading Synology DSM to v. 7.0, I need to repair/reinstall Exiftool. When I try this I get the following error message:
Invalid file format. Contact the developer of the package
Please advice
See this thread (https://exiftool.org/forum/index.php?topic=12794.msg69217#msg69217).
The original creator of that package, Nexius2, no longer has a Synology and cannot update it.
You'll have to manually install exiftool. See the Unix install instructions (https://exiftool.org/install.html#Unix).