How to use FlashPlayer 10.2 and 10.3 feature with Flash CS5

I want to use the new features introduced by FlashPlayer 10.2 and 10.3. More specifically, stage video and acoustic echo cancellation. Since adobe does not offer the update for Flash CS5, I have to find the other way to do it.

What I did is follow the instruction specified in the link. In this case, I set up FlashPlayer 10.3.

However there are two missing things:

• FlashPlayer10_3.xml: In the player node, change the version from "10" to "12". This works as "-swf-version=12" on Flex Compiler.
  
• Publish Settings: In the flash tab, change the "Hardware Acceleration" from "None" to "Level 2 - GPU".
  

The first enables to use new features, and the second enables to use stage video.