I can't restore my stock ROM of device XOLO A500S IPS by using SP Flash Tool. I need a stock ROM that can be simply flashed by CWM recovery. There is no such ROM available on the internet, as I have searched for it, but couldn't find it. Can I make one myself ? How to do this ?
There are stock firmware images available for download here that can be flashed with the SP Flash Tool.
In terms of creating your own ROM (CWM-based or otherwise), that is beyond the scope of this site.