The core development of Meteor Client focuses on "the latest Minecraft release," which changes frequently. Official support for older versions like 1.8.9 may have lapsed. However, thanks to the open-source nature of the project, community-made forks and archives that support 1.8.9 do exist. A search on GitHub for repositories related to "Meteor Client" will yield several results that specify support for versions from 1.8.9 to 1.21.11+ .
If you encounter problems, here's a quick troubleshooting checklist:
Download the Fabric API for 1.8.9 and place it in your mods folder.
: For 1.8.9-specific utility, users typically rely on standalone Forge mods like Orange's SimpleMods to enhance performance and features. Security Warning