How to *update* a Fedora Core 3 component program?

[Bo Berglund]

On Thu, 26 May 2005 18:19:34 +0100, Paul Howarth <paul at city-fan.org>
wrote:

># yum update firefox
>
>This will get the latest firefox packaged for Fedora (download from the 
>Internet) and update your system.
>
I tried this but then there is a message talking about GPG keys and
telling me to download and install them with the command:
rpm --import public.gpg.key
But when I do this there is an error message "import read failed"
Do I need something besides the command above?
Does it go to the required website and import the keys or how does it
work?

Bo Berglund