Beta 1.7.3 installation guide

Disclaimer: This guide assumes you already have bought a license for Minecraft: Java Edition (Bedrock can't be used) to play.

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Official launcher

You might have this launcher (and a premium account) installed in most cases.
By default, it doesn't show old versions of the game before Release 1.0, and must be enabled in the settings.

 Aruamu has a video guide: https://youtube.com/watch?v=JcBf-yk4TwY

1. Select the Settings tab, found in the bottom left corner.
2. In the Enable Show Historical versions of Minecraft:Java Edition in the Launcher under Minecraft: Java Edition Settings in the General tab.
3. Go back to the Minecraft: Java Edition tab on the sidebar, open the Installations tab and then select New Installation.
4. Enter the desired name of the install, and then select old_beta 1.7.3 in the version dropdown menu, then select Create.
5. Click on the {{button|Minecraft: Java Edition tab on the sidebar again and select the installation you just made from the drop down menu and press Play.

MultiMC/PrismLauncher/Other forks plus BetaEvolutions

• MultiMC: https://multimc.org
• PrismLauncher: https://prismlauncher.org

BetaEvolutions can be used with these launchers.

 cakedon has a video for installing this mod: https://www.youtube.com/watch?v=939CdzZ_5Us
You can deviate at some parts of this guide if you're wanting to use a different fix, or anything else.

Disclaimers:

• Due to BetaEvolutions editing a lot of stuff, it is highly recommended that you do not use other mods whilst using it.
  
  • (Language file edits, terrain edits and so on, are compatible, so long as BetaEvo doesn't conflict with it.)
• Make a ticket on the Discord guild if you're encountering issues.
• In the event you encounter an error related to Discord RPC and if the game shows up with broken colors, please reference the BetaEvolutions/Apple Silicon Mac install guide.

• 

  DiscordRPC error.

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  The aformentioned bug wherein the red and blue channels are swapped.

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1. Install either of the aforementioned launchers (MultiMC or PrismLauncher or what have you).
2. Download BetaEvolutions - the jar mod to be specfic.
3. Get a build of the JRE for your computer's architecture and OS
   • You can use the OpenJDK builds from either of these vendors:
   • Azul Zulu: https://www.azul.com/downloads/?version=java-8-lts&package=jre#zulu
   • Adoptium Eclipse Temurin: https://adoptium.net/temurin/releases/?version=8
4. Launch MultiMC (or fork), set up your account by clicking on the account selector in the top right corner, select Manage Accounts..., and then select Add Microsoft.
5. Select Add Instance, and select b1.7.3 as the version by enabling Betas and scroll through the list until you see it. Change the details to your liking and select OK.
6. Right-click (or left-click; open context menu) the newly created instance, and select Edit, or select the same button on the sidebar after selecting the aforementioned instance.
7. Version -> Add to Minecraft.jar -> Add the BetaEvolutions jar mod you downloaded.
   • Don't use the Mods tab for this! (Not unless a mod loader is used.)
8. Go to: Settings -> Tick Java installation -> Auto-detect if you installed the JRE system wide.
   • If you downloaded the zip/tar archive, you simply extract it, select Browse in the instance settings, navigate to the extracted JRE -> bin/java and select that java file.
   • Under MS Windows, use javaw.exe instead.
9. Launch the game via Launch and pray it works.

• Image guide
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BetaCraft launcher

• https://betacraft.uk/downloads