You should NEVER change any code that does not belong to you. If you want to change Microsoft code (in PUBLIC or PRIVATE, or even PLATFORM COMMON or SOC) you will have to clone the component you want to change. You can clone it to a subproject in your OS Design or to your BSP, whatever makes more sense.
More information on how to clone can be found here:
RE: Change code in PUBLIC/PRIVATE
You should NEVER change any code that does not belong to you. If you want to change Microsoft code (in PUBLIC or PRIVATE, or even PLATFORM COMMON or SOC) you will have to clone the component you want to change. You can clone it to a subproject in your OS Design or to your BSP, whatever makes more sense.
More information on how to clone can be found here:
http://guruce.com/blogpost/cloningpubliccodeanexample
http://guruce.com/blogpost/manualcloneofpubliccode