Goto linux Terminal window then type the following command,
sudo add-apt-repository ppa:sevenmachines/flash
After that hit Enter.
Now type the following command and hit enter,
sudo apt-get update
After its completion type the below command,
sudo apt-get install flashplugin64-installer
Hit “Y” when asked and close the terminal window when the installation is completed. The 32-bit edition of the currently installed Adobe Flash Player plugin will be automatically uninstalled.
That’s it Now restart your web browser to make the changes effective.