How to Update Adobe Flash Player for Firefox Internet Browser

Download the update. Let say we have install_flash_player_11_linux.i386.tar.gz

Extract the file
# tar xzf install_flash_player_11_linux.i386.tar.gz

The following files will be generated:
- libflashplayer.so
- usr

Copy libflashplayer.so to the appropriate browser plugins directory.
# cp libflashplayer.so /home/user_name/.mozilla/plugins

Copy the Flash Player Local Settings configurations files to the /usr directory
# sudo cp -r usr/* /usr