Flash menus consist of a .swf (the menu) and a theme (.thm). In order to display the flash menu, you must FSX the .swf file to tpa/preset/custom/desktop/system/flash via FSX:
1.Connect to XS++ ( here can you find guide and download from xs++ 2 and xs++ 3.1 )
2.Click the FSX tab.
3.Browse into the XS++ directory in your My Documents folder, and in the folder "files_to_upload" put the directory tree: tpa/preset/custom/desktop/system/flash/ .swf files here and /tpa/user/theme/ .thm files here.
4.Wait for the upload to finish, and then you'll have some flash menus!
[Note: XS++ will usually hang on Activating GDFS for a few minutes (usually 2-3), so it is normal]
Now you have some Flash menus on your phone. I recommend that you get a Flash menu pack (contains the .thm files, .swf files, and the directory tree already made), so that all the file paths are correct within the .thm file.
Flash supported devices
Link
Nice day
If you thanks somebody, please use the Thanks button.