Flash w/Firefox

Trying netrunner and liking it

one issue i have is flash does not work under firefox, it does work under chrome but I do not use chrome regularly

any sugestions?

Flash is preinstalled and should work under firefox.
Does about:plugins typed in the addressbar show flashplayer as active plugin ?
If you are using an older computer without an SSE2 capable CPU flashplayer won’t run on this. You need an older version. (Search the forum. I kinda remember having such an issue before regarding SSE2 support and flashplayer)