Locate the correct folder for the version of Minecraft you are using.
Browse to your /config folder in your Minecraft Directory, and replace /lucky/Lucky_Block_Properties.txt with the correct file from this ZIP that matches your Minecraft version.
Browse to your /mods folder and open your Lucky Block jar with a program such as 7-Zip. Find /assets/lucky/texture/lucky_block.png and replace it with the included lucky_block.png file in this ZIP, to have the Omega Blocks in your game instead of the default yellow Lucky Block.
BACK UP YOUR WORLD! This mod is extremely dangerous and can cause death, destruction, and general rage-quits. You have been warned.