" versions, enabling Minecraft gameplay directly in a browser Texture Support: Modern builds (like recent betas) include support for 1.21 textures , even though the base game is an older version. Performance:
: It aims to bring newer textures and assets (like those from Minecraft 1.21 Eaglercraft environment Performance
It sounds like you're looking for a guide on something called — likely a hacked client for Minecraft (or another game), since "Beta 11" and "client" are common terms in that space.