Android 4.4 update for xiaomi mi3w kitkat. first upgrade to the recovery clockwormod later install the update from internal storage.
1 copy update.zip to internal storage
2nd install zip from internal storage through true dual boot recovery
3rd updated copy to internal storage.
4th install update from cwm
(note, you must perform a clean installation, perform all wipes)
Download: miui 4.7 updated cancro 4.4kk