How to run flash player on portable firefox 31

Copy the following files from a machine which is installed flash player plugin

flashplayer.xpt
FlashPlayerPlugin_14_0_0_145.exe
NPSWF32_14_0_0_145.dll

to “C:\<Firefox directory>\FirefoxPortable\App\DefaultData\plugins” and “C:\<Firefox directory>\FirefoxPortable\App\Firefox\plugins”

(Remark: You need to create the folder "plugins" if it is missing - I find this path from appinfo.ini under "C:\<Firefox directory>\FirefoxPortable\App\AppInfo")

* After you start the firefox
I also find that those files being copy to C:\<Firefox directory>\FirefoxPortable\Data\plugins

How to run flash player on portable firefox 31