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UPDATE: Space Invaders Software Update Tutorial - Sound Here is a step-by-step instructional guide on how you can update your Space Invaders 1 and 2 machines to increase audio levels.
Click here for Firmware Update
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UPDATE: Space Invaders Software Update Tutorial - Sound Here is a step-by-step instructional guide on how you can update your Space Invaders 1 and 2 machines to increase audio levels.
Click here for Firmware Update