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Allow Java Edition clients with older versions to connect to your Minecraft server

Report ViaBackwards?

Release
5.11.0

kennytv released ViaBackwards version 5.11.0 on July 12, 2026

  • New items and entities now show their names as translatable components instead of string text and can be changed via resource packs
    • Entities use vb.entity.<type>, e.g. vb.entity.sulfur_cube, which falls back to 26.2 Sulfur Cube as before. entitynames has been removed from mapping files
    • Items use vb.item.<type>, e.g. vb.item.sulfur, which falls back to 26.2 Sulfur as before. itemnames has been removed from mapping files
    • Custom model data for new items has been moved to custom_model_data in the mapping files and starts at 0 for the first 1.13 item, going upwards across every protocol (currently ending at 937). 1.21.4+ clients have their original item identifier added to the custom_model_data string list, and all client versions have the custom model data from the mapping files added (either to the new float list or the old single-int tag)
  • On 1.21.5+ servers, handling of items sent by the client now mostly skips from 1.20.4 to 1.21.5 to avoid heavy item reading and transformation code
    • If your server is on a version between 1.20.5 and 1.21.4, it is highly recommended you update to 1.21.5 or higher
  • Fixed multi-line text displays in 1.19.4->1.19.3
  • Fixed disconnects when using new environment attributes in custom dimensions
  • Fixed invisible beds in 26.2->26.1 (by booky10)
  • Fixed code of conduct writing in 1.21.9->1.21.7
  • Fixed baby happy ghast scale in 1.21.6->1.21.5 and baby squid and dolphin scale in 1.21.2->1.21 (by mfishma)
  • Fixed creative mode inventory clear action in 1.21.2->1.21
  • Fixed 1.20.1 disconnect from new 26.2 sulfur cube archetype registry (by EnZaXD)
  • Fixed 1.13->1.12 comparator mapping
  • Fixed console warning about invalid sulfur_cubes legacy biome mapping

If you want to get larger version updates early, consider supporting me via https://viaversion.com/donate. See the previous update notes for more info.

Information

Published onJuly 12, 2026
Downloads8,399

Platforms

Paper Paper (1.10-26.2)
Velocity Velocity (3.4-3.5)

Dependencies

Paper Paper
Edit Plugin Dependencies: Paper
Velocity Velocity
Edit Plugin Dependencies: Velocity