UPDATE to MIUI V6 5.4.17
Installation process remains same
All credit to the developers and 4pda… i am just posting here
Original link from 4pda.ru
Finally MIUI 6 for P780
Very beautiful and elegant !!!
Optimized battery performance…
Note :- Xposed framework or WSM tools may not work as expected
Make a backup of your phone before you peform the install !
Wipe Data/Cache/dalvik And install from CWM
Only for Chinese firmaware and recoveries … DO NOT try to put on ROW firmware
How to Install
Step 1: Copy the ROM on External SD card
Step 2: Restart the phone in recovery mode
> Power button + volume button down, to enter the recovery mode.
> Wipe Data / Factory Reset -> delete all user data
> Wipe Cache Partition -> Wipe cache
> Advanced -> Wipe Dalvik Cache
Step 3: Return to recovery main interface Install zip from sdcard -> choose zip from sdcard -> Select the ROM
Step 4: You may see an error, just ignore and proceed with reboot.
More info about the Rom can be found at http://4pda.ru/forum/index.php?showtopic=647777&st=20#entry38457803
All the credit goes to developers, i dont own this ROM …. i am just posting here.