In which version of Minecraft Launcher version rd-20090515 was added? Can you give a link to download the launcher version?
This is not version 1.2.1, as written on the wiki. Here is a screenshot that version rd-20090515 was not in 1.2.1.
Not sure, it might be on the wiki but if not, no clue. Best to check sources that have details around the Alpha/Betas. Some communities that cover them exist, some modding, some recovering those lost versions.
This Discord does focus on Modding but they do Alpha and Beta so they might know, otherwise look at a few older threads for the MCForums on Archive.org I guess and see what you find.
In which version of Minecraft Launcher version rd-20090515 was added? Can you give a link to download the launcher version?
This is not version 1.2.1, as written on the wiki. Here is a screenshot that version rd-20090515 was not in 1.2.1.
Not sure, it might be on the wiki but if not, no clue. Best to check sources that have details around the Alpha/Betas. Some communities that cover them exist, some modding, some recovering those lost versions.
https://minecraft.gamepedia.com/Launcher_version_history
This Discord does focus on Modding but they do Alpha and Beta so they might know, otherwise look at a few older threads for the MCForums on Archive.org I guess and see what you find.
https://discord.gg/bJjfM2
I don't know many sources for these sorts of things but just best to look around on Google for some websites or Reddit maybe.
Niche Community Content Finder, Youtuber, Modpack/Map Maker, Duck
Forum Thread Maintainer for APortingCore, Liteloader Download HUB, Asphodel Meadows, Fabric Project, Legacy Fabric/Cursed Fabric, Power API, Rift/Fabric/Forge 1.13 to 1.17.
Wikis I Maintain: https://modwiki.miraheze.org/wiki/User:SuntannedDuck2