Dear, Mi Fans!
Good news for all Redmi 4 Users, Here is the much awaited Nougat Based MIUI 9 Global Stable Version V91.1.0 NAMMIEI Update for our Beloved Redmi 4. If you can't wait for ota to come, download update from here and enjoy new update.
How to Upgrade?
1) You can update via OTA if you are using MIUI 8 stable ROM. Go to 'Updater' app on your device and check for updates.
2) Please do backup important data before flashing. If you flash from developer ROM to Stable ROM, please wipe all data, otherwise, it might cause serious incompatible issues like FC, no network etc.
3)Tutorial for flashing Here
MIUI 9 Global Stable ROM V18.104.22.168. NAMMIEI Download Links
Update your device and provide us the feedback!