Contact person: Business Client

Phone:Show

Email:Show

Location: Barcelona, Spain

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I have a fully working Minecraft 1.21.1 mod and I need it to run on 1.20.1 without losing any current behaviour. You’ll receive the complete source-code and build files; the goal is a clean, compile-ready project that launches in 1.20.1 and plays exactly as it does now.

Key points
• Keep every existing item, feature, and config intact.
• Update mappings, Gradle settings, and loader-specific hooks so the project builds and produces a 1.20.1-compatible JAR.
• Resolve any API changes between the two versions, removing or refactoring only what is strictly required.
• Provide a concise change log and note any classes or methods that needed deeper edits.

Deliverables
1. Updated source project in a Git archive or ZIP.
2. Verified 1.20.1 JAR that loads in a vanilla profile with the appropriate loader.
3. Short README explaining what changed and how to re-build.

I’m happy to test intermediate builds and answer questions about the codebase. Let’s keep the scope focused on getting a stable, functional 1.20.1 release." (client-provided description)