if you're on O2 in the UK and have been wondering when they'd roll out BlackBerry 7.1 to their line of BlackBerry devices, you can wonder no more. O2 has announced availability of OS 7.1 for the BlackBerry 9900, 9360, 9810, 9860 and 9380 collectively. All the files have been submitted to the O2 UK BlackBerry software download page and can be downloaded directly. If official OS' are the only way to go for you, time to grab your USB cables and get yourself updated.