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OnePlus has started pushing out a new update to its OnePlus X smartphone. The update - which arrives as OxygenOS 3.1.4 - brings along several changes, including the Android security fixes for the month of November. In addition, the update - which is being rolled out incrementally - also includes fix for launcher-related crashes and features auto-brightness optimization. System stability has also been improved, and some general bug fixes are included as well. Source
Source: http://www.gsmarena.com/new_oneplus_x_update_brings_november_security_patch-news-21563.php