A. Easy
- Use the
official launcher to download and start once Minecraft 1.6.2.
- Start
Magic Launcher
- Click "Setup"
- Select Environment "1.6.2"
- Click "Add" -> select the OptiFine ZIP file
- Click "OK"
- Login and play
B. Simple (for OptiFine 1.6.2_C4 and newer)
- Double-click the downloaded JAR file and the OptiFine installer should start
- Click "Install" and OptiFine will be installed in the official Minecraft launcher with its own profile "OptiFine"
- Start the official launcher and play
C. Complex
- Use the
official launcher to download and start once Minecraft 1.6.2.
- Go to the minecraft base folder (the official launchers shows it when you click "Edit Profile" as "Game Directory")
- Go in subfolder "Versions"
- Rename the folder "1.6.2" to "1.6.2_OptiFine"
- Go in the subfolder "1.6.2_OptiFine"
- Rename "1.6.2.jar" to "1.6.2_OptiFine.jar"
- Rename "1.6.2.json" to "1.6.2_OptiFine.json"
- Open the file "1.6.2_OptiFine.json" with a text editor and replace "id":"1.6.2" with "id":"1.6.2_OptiFine" and save the file
- Copy the files from the OptiFine ZIP file in "1.6.2_OptiFine.jar" as usual (you can use the 1.5.2 instructions for this) and remove the META-INF folder from "1.6.2_OptiFine.jar".
- Start the official launcher
- Click "Edit Profile" - Select "Use version:" -> "release 1.6.2_OptiFine"
- Click "Save Profile"
- Click "Play" or "Login" to start the game. If only "Play Offline" is available, then log out and log in again to fix it.