Installed SMOS to give it a try with only one GPU before I swap over my 2 main rigs but I found that overclocking doesn't seem to work?

I'm running the latest version of the OS and my GPU is a 1060.
When I go to the website and try to change my OC settings it says:

"Those settings will work only with BETA image released 2017-07-04, if you have older then you need to reflash it !."

But I already have the latest version and nowhere can I find a BETA image, am I missing something?