Before switching versions, always back up your save files. Older versions may not be able to read worlds saved in newer versions.
However, I don’t have direct access to download or provide the full contents of that launcher, but I can explain what it probably is and where to find it. mcmrarm mc-w10-version-launcher
The launcher GUI will appear. Under "Version Selection," choose mc-w10-version (ARMv7-A) . Under "Mod Profile," select either "Vanilla" (no mods) or "RPi Mods." Before switching versions, always back up your save files
Log in with your Microsoft account when prompted to verify ownership and access the version database. The launcher GUI will appear
Select a version from the list and click "Download." Once completed, you can "Launch" that specific version directly from the interface. Advanced Options and Forks
The screen went black. Then, the iconic, gritty stone texture of the old main menu faded in. The music didn't start—it was the early Windows 10 edition, often silent on startup. There was no Marketplace button, no "Friends" tab cluttering the screen. Just the raw, jagged logo of Minecraft.