"Reverting" KSP to an older version (Steam)

[AeroSky]

Hi!

If we revert KSP to an older version (1.10.1 to 1.8.1), can we still upgrade back to 1.10.1?

Thanks!

P.S. This is on Steam.

Edited November 27, 2020 by AeroSky

[Spricigo]

In the wish list of many of us, however Steam will always try to install/update to the last version available no matter  what.

[bewing]

You can save or move your copy of v1.10 somewhere else on your disk. Downgrading requires dl'ing almost the entire thing anyway. But yes, even if you downgrade your current copy to v1.8, you can upgrade it back to current at any time.

[Serenity]

4 hours ago, Spricigo said:

In the wish list of many of us, however Steam will always try to install/update to the last version available no matter  what.

What do you mean? From the beta menu you can select even versions from years and years ago.

Except if you mean something else.'

Edited November 27, 2020 by Boyster

[AHHans]

As @Boyster said: from the "Betas" menu you can choose which version Steam should install. To get to that menu you need to "manage" (or right click in the library list), then "properties", the "Betas" tab, and then there is a selection list where you can choose the version you want to have. "None - Opt out..." will install the latest version.

[Spricigo]

14 hours ago, Boyster said:

What do you mean? From the beta menu you can select even versions from years and years ago.

Except if you mean something else.'

I actually misread the question so yeah, was meaning something else enterely.

In any case, I still remember requests for older versions  available on steam popping very often and the answer being "not on Steam".  Seems there was some change while I was taking my long break from  KSP. May someone tell me since when that Betas on Steam is a thing?

[Gargamel]

4 hours ago, Spricigo said:

May someone tell me since when that Betas on Steam is a thing?

For as long as I can remember. 

There are only certain versions available on Steam though.  Usually just the most stable version of each release.  You can get 1.3.1, but not 1.3.0 for example (I believe).

[Spricigo]

Well, well. Memory playing tricks on me it seems...

Thanks guys for correcting my mistake.