The Nokia N80 Internet Edition is a software enhanced version of Nokia S60 3rd Edition that includes application such as Yahoo! to Go, Flickr, 3rd party SIP based VoIP, Nokia Download! Client, Mobile Search and WLAN Wizard.
Now the owners of the plain old N80 can also upgrade their firmware to the Internet Edition version officially through Nokia’s DIY Software Update Services. The version number for Internet Edition is 4.0632.0.38

Via Darla’s Blog

Visit the NSU homepage to check if there is any update for your Nokia N80.