The Lumia Denim update has started rolling out to the T-Mobile Nokia Lumia 925. It bumps the software version to 3051.50009.1451.0018, and brings along features like the ability to shoot 4K video as well as faster camera start-up and shutter speeds. The update, which is roughly 530MB in size, should be available for download OTA now. To check, go to Settings -> Phone Update and then tap on Check for updates. If you receive the error 'Update needs more space' while performing the update, head to this T-Mobile support page. Source |...
Source: http://www.gsmarena.com/denim_update_rolling_out_for_the_tmobile_nokia_lumia_925-news-11331.php