HTC finally releases new update for HTC Desire 820 devices in India. HTC Desire 820 in India receives Android Marshmallow update now. The update is already live for HTC Desire 820 in China and Europe. Now it debuts in India. The update is now rolling out to HTC Desire 820 devices in India. The update size is 925 MB and you can download it now. The new version number of ROM is 3.17.1400.4 and it brings many new changes and improvements. The new features including Google Now On Tap, App permissions, smart battery Optimization,doze etc.