Asus has started pushing out a new update to its Zenfone 3 Deluxe (ZS550KL) smartphone. Arriving as version 12.40.108.17, the update only brings a handful of changes, including improved stability of touch performance. As for other changes, the update adds Pure mode in Audio Wizard when earphone is connected, as well as NFC function user tutorial. As is usually the case with OTA roll outs, it may take some time for the update to reach your device. Meanwhile, if you feel impatient, you can manually check for the update by heading to...
Source: http://www.gsmarena.com/new_asus_zenfone_3_deluxe_update_improves_stability_of_touch_performance_brings_other_changes-news-22645.php