Phone Firmware Update Software11/03/07 Permalink
You can update the firmware on a selection of Nokia phones using the updater software on their site. I've just updated my Nokia N70 and one of the most notable things in the update was getting rid of the annoying scratchy noise when you listen to the radio - it was worth downloading just for this.
Nokia Phone software updater
Here's the Sony Ericsson one - Sony Ericsson software updater. Just select your phone model from the list.