IM SEARCHING FREE SAMPLES OF DOOGEE PHONES !!!
MIUI V7
Install over custom recovery
Problems with icons ? arrange icons by yourself, use menu.
Update from 5.xx to 6.1.21 posible from all version
6.1.21 is full update, posible use for clean install
For clean install 6.1.21 , first wipe data, and install zip
for update install zip WITHOUT WIPE DATA !!!!
Please allways create backups