Lenovo has been one of the slower companies when it comes to updating its products to Android 6.0 Marshmallow, but the Chinese smartphone maker isn't stopping. Following the release of the update for the A7000, K3 Note, and Vibe P1 over the past few months, today Lenovo has started sending out the Marshmallow bits to the Vibe S1. So far the update has been spotted in the United Arab Emirates and India, but it's sure to make it to other territories in due course. Your phone will pop up a notification once the new software is ready to download and install. That said, you might want to...
Source: http://www.gsmarena.com/lenovo_vibe_s1_gets_android_60_marshmallow_update_-news-18072.php