According to your More System Details by your post you appear to have an ancient version of Flash Player 11.2 in use on your system.

This page shows where Firefox looks for the NPAPI Flash Plugin. https://developer.mozilla.org/en-US/docs/Plugins/Guide/Plug-in_Basics#How_Gecko_Finds_Plug-ins

Normally I put the libflashplayer.so extracted from flash_player_npapi_linux.x86_64.tar.gz from https://get.adobe.com/flashplayer/otherversions/ in created plugins folder at ~/.mozilla/plugins

If Firefox was running when you installed Flash then instead of restarting Firefox you can type about:plugins in Location (address) bar to scan for it and show what version you have and where it is located on system.

I put the libflashplayer.so in both locations but dont working. I have 2 flash now old and new I sad in my first post that updated flash also dont working. I update it with update manager. Sory on my english

This is about:plugins info: File: libflashplayer.so Path: /usr/lib/adobe-flashplugin/libflashplayer.so Version: 11.2.202.468 State: Enabled (STATE_VULNERABLE_UPDATE_AVAILABLE) Shockwave Flash 11.2 r202

I put the libflashplayer.so in both locations: Path: /usr/lib/adobe-flashplugin/libflashplayer.so Path: /usr/lib/mozilla/plugins/libflashplayer.so dont working

I dont know why, when I download tar bz2 any package of firefox and run it localy flash is working (old version)