Should I upgrade firmware, or is it even possible.

[Firefighter 0]

So I have some Hikvision 3MP bullet cameras.

I think their the DS-2CD2032

Chinese versions but everything has been fine and I got them in english.

 

I bought them back in like 2013. Maybe 2014.

 

Is there any update I could do to expect better performance/Image or anything.

 

I plan on upgrading the cameras but I figured I don't want to be missing out on the ones I have.

 

Thanks