Smile Karbonn A8 Software Flashing

Dear Sir


I have a device name KARBONN A8 i want to flash stock rom i have also downloaded stock rom from http://androidxda.com/download-karbonn-stock-rom-models
but how can i flash it on my device beacuse i found in system.img build.prop is different with my karbonn a8

please send me full flashing guide for karbonn A8 device