This ROM is the best one by Samsung for Indian Galaxy Ace users.
Its a release after 2.3.4 DDKQ6.
This update includes even newer Adreno 200 GPUso smooth scrolling.
Newer Lock screen like Galaxy S2.
Brother in Arms 2is super Smooth.
But RAM usage is on its highest.
Camera Clarity is even better.
WIFI even better.
How to install?
* First Update your phone to 2.3.4 DDKQ6 tutorial here
* Now don't root when you are on 2.3.4 DDKQ6
* Go to Setting, About phone,Update. (Login or Register with Samsung Account)
* Press Update.
Now it will show you a 14 MB update,it.
And then after download phone reboots and installs update itself.
(Update will take 30).
After update is installed phone will start normally.
*If you want clean experience of this firmware than shut down phone.
*Start Phone in Recovery by pressing (Home + Power) button together for 5 seconds.
* Now select (Wipe Data/Factory Reset) option in recovery mode by scrolling with the help of volume buttons and Home button as OK button.
*Now select Yes in options.
Now you have a clean Factory ROM with all the great warranties.
Now you are a owner of phone with Android 2.3.6