The Outer Bread Update is a release file of the Minecraft resource pack Logical Bricks, made for Minecraft 1.16.4. It was published on January 14, 2021 and is 0.6 MB in size. For the full description, screenshots and every other version, visit the Logical Bricks resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.