1. u have rooted device .,,, if not root through kingo root,iroot software.
2.you have cwm/twrp/philz recovery installed if u dont have any of these recovery ,,,then i gave u my developed recovery through mtk droid tool.... see attachments for recovery.
3.fisrt root your devise then instal mobile uncle tool from playstore then backup your imei and then copy recovery image and pure l.zip file in ur devise then open mobile uncle tool and click on recovery update and choose your recovery.img file.
4.Download patch.zip from from attachments and place in ur sd card
5.then go to ur recovery menu (switch off ur phone then press home+volume up button)
6. Delete wipe data factory reset/wipe cache/wipe davlik cache.
7.open mount and storage format system/data/cache.
8.then go to instal zip from sd card and instal rom then instal patch file.
ALL DONE NOW REBOOT UR PHONE AND ENJOY
keep enjoying its totally bug free
#NOTE: Download mobile uncle tool from attachments......IF YOU LOST YOUR IMEI NO. THEN resotre ur imei no which you backup before....
Download rom from this link https://docs.google.com/file/d/0B0NI...p=docslist_api