Quick Answer
Use free Serum presets only after confirming the required Serum version and included assets. Import them through Serum's own Show Serum Presets Folder command, preserve the pack structure, then rescan folders on disk.
Use free Serum presets only after confirming the required Serum version and included assets. Import them through Serum's own Show Serum Presets Folder command, preserve the pack structure, then rescan folders on disk.