You must login or register to view this content. the 1.5 minecraft file
1. Download the minecraft.jar. (unless you already have it)
2. Open finder,at the left you see Desktop and under that your personal files
3. Then open library
4. Application Support
5. Minecraft folder
6. There you see a folder called 'Bin' open that.
7. Then drag your downloaded minecraft.jar into that. It will ask if you want to replace it. Click yes
Now you have downgraded!