# [Download the server jar!](https://mrpack4server.pb4.eu/download/polymania/0.3.0-beta.1/jvm21/server.jar)
While this release is marked as alpha, thats due to it not being fully compatible with old world.
For new worlds, you should use this version!
## 0.3.0-beta.1
- Updated to 1.21.4
- Updated ALL mods. Won't put them all here as it's just too many.
- Warning: Old worlds aren't fully compatible yet!
- Due to some content mods being removed (at least temporarely) old (0.2.1 and older) worlds won't work.
- If you didn't engage with them or don't mind losing them, you should still make sure to backup everything before updating!
- Old, missing items and blocks will be converted into existing blocks, to try preserving buildings somewhat.
- Added Braver Bundles.
- Added links to modpack's Modrinth page, bug reporting page and discord (in Server Links).
- Provided via Simple Server Links.
- Removed content mods:
- CC: Tweaked - not on 1.21.4
- Borukva Food - not on 1.21.4
- Removed util mods:
- Polymer Patch for CC: Tweaked - requires CC: Tweaked
- PolydexBridge - EMI isn't on 1.21.4 yet
- Mod Viewer - not on 1.21.4
- Removed not needed/replaced mods:
- Crash Exploit Fixer - Fixed in vanilla
- Anti Dupe - Fixed in vanilla
- Boat Break Fix - Fixed in vanilla
- ViaFabric / ViaVersion - Already on latest
- Server Ui Fix - Better fix implemented in Polymer
- This Rocks Polymer - Merged into This Rocks!
Developer information
Projects on Modrinth are automatically available through a Maven repository for use with JVM build tools such as Gradle.
maven { name = "Modrinth"; url = "https://api.modrinth.com/maven" }