After the hard reset does the android operating system will downgrade?

[AC Question]

I am using Karbonn Sparkle V Android One smartphone. Currently, it is working on 5.1.1 Lollipop. I want to hard reset my device.
After the hard reset, does the operating system of my device will remain same or it will downgrade to 4.4.4 KitKat (at the time I purchased the device.)

 

[Protostar56383]

It will stay at the current version.