Rating: Use Wi-FI or have a good data plan as the file is 2MB in size.
Nokia have released a software update for N78.
The update includes “improved stability with Bluetooth (headsets and car kits) and music (playback over a long time and content refresh). This release also includes optimized Camera performance and Naviscroll sensitivity improvements.”
The update is only available for download over the air either via your network/operator or Wi-Fi. You can not use the Nokia Software Update application. If you are going to do this through your operator remember they charge for Data so make sure you have a plan that can handle the 2MB file or better still use Wi-Fi.
To update your N78 go to Menu > Tools > Utilities > Device Manager. Select Options > Check for updates and follow the on-screen prompts.