Default [Q] Stock bootloader or recovery tool

I have a problem, hope you guys can help.
I have rooted my A116 & took backup of stock ROM. Then I flashed it with CWM bootloader. After this step I forgot to take backup of my Stock ROM & I have installed a custom ROM.
Now CWM is not detecting backup made with stock bootloader or recovery tool.
How I can install this old ROM back. Can I get stock bootloader so that I can flash it back & Install my stock ROM from backup.

Thanks in advance.