Owners of Nintendo's new Wii U console have been facing lengthy waits to make full use of it because they need to install a large firmware update. The software - which adds features including access to the Miiverse social network - is about one gigabyte large, and must be downloaded via the net. There are reports that some machines became "bricked" - or unusable - because the update was interrupted. Nintendo has warned users not to "power off your system" during the process. The Japanese games company has acknowledged that the data required "an hour or more" to download and install. Read the full story at The BBC.