Install H2OS 2.5 VoLTE Ready ROM on OnePlus 2 [Android 6.0.1]

This is the Solid Snake Update from Chinese Hydrogen OS team for the OnePlus 2 which include all the features of OnePlus 3 including fully VoLTE support specially for Reliance Jio SIM in India (Full  update log given below). This is an Official Update from Chinese Hydrogen team, so the version is stable and no need to worry about any kind of bugs. Please keep in mind that this ROM contain few