I am on miui v4 ics by maxworks.
1.flash kernel turbo kernel 3.1 or turbo kernel 3.1.1 both are fine
2. Flash ROm MIUi v4 ics 3.2.22 EN only version works good. If u need other language,only then try using Multi.
3. Make sure slot 1 is set as ICS Stock .. If ur installing on slot 1 that is.
4. Flash ROM and try not to install many things.keep it as light as possible.
5. Let ROM flash and wait,rom will boot.. And then reboot. Let it complete..
Sent from my R800i
Phone: Xperia Play (R800i)
Android version : 4.4.4
Kernel version : Legacy Xperia 3.4
ROM : Legacy Xperia 4.4.4
Kernel 3.x Development for Reference for all Dev's