To update your (typically the BetterRepack or similar fan-curated versions), the most effective method is using a combination of the built-in updater tool , KKManager , and the HF Patch .
Note: It is often faster to unpack mods manually from the included mods zip folder rather than using the slow "sideloader" download method. koikatsu partyrepack upd
Never install a community repack directly into your Steam game folder; keep them in separate directories to avoid file corruption. To update your (typically the BetterRepack or similar
It is generally safe to install a newer version directly over an older one. Important Compatibility Notes and sideloader mods
For updating specific plugins, translations, and sideloader mods, KKManager is the standard utility. Open KKManager.exe and go to the Tools menu.