Update MIUI 7.1 is offered for the devices as Mi 3, Mi 4, Mi Note, Mi 4i, Redmi Note 4G, Redmi 2/Prime, Redmi 1s, Redmi Note Prime, Redmi Note 2, Redmi Note 3G and Mi Pad as well. From now on, many of you should be able to progressively receive the update over-the-air (OTA) on your phones via the Updater app. If you cannot wait, you can download the ROM packages in this thread below. Yours by design! Get ready for the first upgrade in 2016!
Through MIUI 7.1, it brings some minor updates, including the ability to make a hidden folder in File Explorer, the support of image editing with a new function – Doodle, Mi Drop integration for easily sharing files with devices that nearby, and also support Data Saver for save data.
Changelog & Download links : http://en.miui.com/thread-204184-1-1.html