Install the complete matching update for the Backrooms court portal and 1–4 player crew lobby, the Chunk Loaders phone app, train safety, voice category names, new curios and the updated Field Guide. Minecraft 1.20.1 · Forge 47.4.10 · Java 17 · 12 GB allocation minimum.
Technic reuses unchanged cached files. Existing Prism instances update on launch. If an older Prism instance needs memory repair, follow the visible instructions to close and reopen Prism once. Keep personal saves.
Modrinth and CurseForge are direct import packages; marketplace publication and review remain pending. Native player testing remains pending.