decompile a main.swf file of an android app made by flash

I have an android app made by flash, first of all, i no longer have the fla file, just the swf file, and I want to make some changes on my actionscripts files.

my question : is there any software to edit the decompiled components of a swf file, directly and save the changes ? I don't want to extract sources and then compile them, because it's another story to compile a swf file.

another concern, do I have to worry about adobe versions ? for example, the app is made by adobe professional cs 5 (plugin for android included), if i'll have for example to compile a swf file, should I use a cs5 to do that ?

Thanks in advance for your reliable anwsers.