Most modern repacks (like BetterRepack) include a standalone launcher with an "Update" button .
If adding new DLCs manually, extract them to your game directory (ensuring folders like abdata merge) and then re-run the HF Patch to ensure compatibility.
To apply it, download the .exe and .bin files, run the installer, and point it to your game directory.
Never install a community repack directly into your Steam game folder; keep them in separate directories to avoid file corruption.
Enable ; the update button will turn green when new versions are available.