I think you can easily detect the flash lite version by using :
Originally Posted by Ooze
in the actionscript of ur swf file. So , what u have to do is to launch the swf file by using Content Handler (i.e it open the flash file with default flash player) in ur symbian c++ stub.Moreover, Flash lite 2.0 applications work with FL 3.0 .Thus , it is good to make ur swf file in FL 2.0..Hope it helps u...
var flashVersion:String = getVersion();// returns FL 8,1,53,1 for flash lite 3 and FL 7,2,201,0 for Flash Lite 2.1