How to Update an RLCraft Server Safely
RLCraft updates its entire 300+ mod list together, and Java 8 stays required the whole way through 1.12.2. Backup first, match the server pack exactly, and verify before reopening.
Start with a restore point
Back up the world before updating — RLCraft worlds often represent weeks of hardcore-style progression.
Match the server pack exactly
- Download the exact matching server pack version for the client version you're updating to — never mix an old server pack with newer client mods.
- Keep Java pinned to 8 — RLCraft does not move to a newer Java with updates.
- Confirm the Forge version in the new server pack before launching; RLCraft pins an exact build per release.
Verify before you reopen the server
Let the world fully load, confirm Lycanites Mobs and the progression systems initialize without errors, then invite players back.
FAQ
Does RLCraft ever move off Java 8?+
No — it stays on Forge 1.12.2 and Java 8 across its updates. Don't upgrade the JVM expecting it's required.
What happens if I mix an old server pack with new client mods?+
Immediate mismatch crashes on connect — always download the matching server pack for your exact RLCraft version.
What should I verify before reopening?+
That the world loads cleanly and Lycanites Mobs/progression systems initialize without errors in the log.
View RLCraft Hosting
CoalHost pins Java 8 and the exact Forge build RLCraft needs automatically.
View RLCraft Hosting →