Add Opera repository by adding the following APT-Line
Code:
deb http://deb.opera.com/opera/ stable non-free
Run the following in the Terminal:
Code:
deb http://deb.opera.com/opera-beta/ stable non-free
wget -qO - http://deb.opera.com/archive.key | sudo apt-key add -
If you get "The following packages cannot be authenticated" warnings, you'll also need to run
Code:
sudo apt-get install debian-archive-keyring
Install opera
Code:
sudo apt-get update
sudo apt-get install opera