Samsung has started rolling out the latest Android Marshmallow to the Galaxy S5 (Exynos variant) in India. The update comes after the update starts hitting the Snapdragon variant of the Galaxy S5 devices in India in April.
The update brings the goodies of Marshmallow 6.0.1 which is a stage roll-out. So you have to wait until the update notifications hits your device. It is also available through the South Korean company’s Smart Switch software for PCs. You can also manually check for it by heading to the Settings menu on your device.