Default [Q][B]how can i back or flash stock rom[/B]

I am on kingcobra 4.1 rom and I want to back to stock rom
any idea plz


details
=JuopunutBear=
Runnymede pvt ship S-OFF
radio-3831.16.00.27_M
eMMC-boot
Apr 24 2012, 18:59:39