How to remove old version flashplayer in Firefox ?
 

I could not see any video in youtube. I type about : plugins and it shows my flashplayer is version 7, so I upgraded it to the latest one. However, it still shows the current version is 7.

How to remove it and upgraded to version 9 ?

I had the same problem
 

Check your hidden files under your home folder. Look for .mozilla. See if libflashplayer.so is installed there. If it is, delete it. Next check in /usr/lib/browser-plugins for libflashplayer.so and delete that. Once you do that, then do a file search for libflashplayer.so, you will then know where the new file went. You will just have to copy it to where the old one was deleted. Good Luck....Definitely will work.

I am a newbie . Can you show me in detail please ?

Thank you !

E.g. How to do a file search for libflashplayer.so

How to copy it to where the old one was deleted ?

In fact, I got the following message when I installed it .

('package flash-plugin-9.0.115.0-release is already installed', (2, None, 0L))

What can I do ?

You can start a terminal and then do the following
You are probably best executing those commands as root so that you do not get permission errors. Another option is to do

I believe I 've followed the instructions and delete the files. What's the next step ?

How to copy the files ? what files ? to where ?

Thank you !

the syntax of the copy command is:

cp /path/to/file /path/where/tocopy/

You need to copy the files that you downloaded (flash 9) to the exact location from where you deleted the old files.

hth