I will check it tomorrow in the afternoon with chromium, I can't do it sooner because I only use Firefox and Tor browser. Anyway, what I also do and mostly is to download Firefox browser (also Tor browser), extract the file/es in my /home/knoppix directory and then create a link in my Desktop. It works very well and I always use the most recent flash version, even knowing all the problems I could find using flashplayer.