By proffesion i m a It professional but i was not much involved in Android Development/Experiment.
i had updated my phone to JellyBean 4.1.1 from service center.
But after alot of research i Rooted my Canvas 2 Phone in nov 2013.
lots of apps were there to use, i used it.
Then i heard of ThunderZap Kernel 2.0 and i decided to use it .
i used Quadrant Standard Edition to view the change after installing it but unfortunately i saw that performance was degraded a lot.
but i continued using it had many problems in between.
then yesterday i decided to try any custom rom, after a self evaluation i decided to use MIUI Custom Rom.
i followed the mentioned procedure as said in the post by @Akhilendra Gadde.
flash 3.12.13 and update it to 3.12.21
i followed it completely.
now my phone is looking awesome.
UI is too good.
but....I M facing Problems.
1. Rear Cam is not working.
2. Play store download not working.
3. Unable to Install any apk files/apps.
4. default browser i unable to download complete files.
5. system is laggy.
i have udated the download limit in downloads but still having prob.
i m using thunderzap v2 kernel.
why should i use any script as they suggest suvibooster.
if anyone know/tried and want to suggest me any custom ROM with no Bugs plz suggest me.