BlackBerry has started pushing out a new beta update to its Android-powered DTEK50 and DTEK60 smartphones. Arriving as build number AAH990 and AAI039, respectively, the update brings along Android security fixes for the month of December. DTEK60 If your DTEK50 or DTEK60 device is enrolled in the beta program, you can check for the update by heading to your handset's Settings menu. As far as users of the Canadian company's Priv smartphone are concerned, there's no beta update this month as the final update - carrying a build number of AAH995, and containing December security patch...
Source: http://www.gsmarena.com/latest_beta_update_for_blackberry_dtek50_brings_december_security_patch-news-22013.php