Lenovo recently rolled out the android marshmallow update for lenovo a7000 via ota.the size is 1675MB.but it is not still confirmed for the update for tanna lenovok3 note devices.
How To Install Android Marshmallow on Lenovo A7000:-
1.Turn off your device
2.Pull out the battery for 2 min.
3.Insert the battery.
4.Switch on your device.
5.Notification of system update will be seen.
6.Those who don’t see the notification can manually go to settings>about phone>system updates.
7.You will see update available for your device.
8.Now tap on download button.
9.Downloading will start soon.
10.After complete of download reboot your device.
11.Update will take some time.it depends on size
So this is my article on How To Update Lenovo A700 in Android Marshmallow so for more articles stay tuned with us.