Slitherine

Hi I tried yesterday but failed so I ask again. I can't update OoB.
I tried to instal core first (which file is core file?) but still no succes.

I have these files:
1. OrderOfBattle-WWII-SetupRelease-v248 (says needs update? but does not do that because it needs an other update first 6.1.7)
2. OoBWWII-MultiSetupRelease-v6.1.7 (asking for CD 2 when installing?)
3. OoBWWII-MultiUpdateComp-v7.1.6 (asking for update 6.1.9 when installing?)
4. OrderOfBattle-Blitzkrieg-SetupRelease-v296

In which order must I instal? Or do I miss a file?

Please help me.

1.CORE : Order of Battle: World War II PC Installer v.7.1.4 (13 NOV 2018)
2.UPDATE : Order of Battle: World War II PC Update v7.1.6 (19 FEB 2019)
3.DLC : Order of Battle: Blitzkrieg PC Installer v.2.9.6 (10 NOV 2016)

thanks. It worked.

I had gone version 6.1.9 (as provided by slitherine checkout process), then manually downloaded v7.1.6 and installed.

Although the game worked, I noticed that the titles of opposing forces when selected would often say US force titles. I'm now biting the bullet and uninstalling completely and installing via Steam.
Hopefully that sorts it all out...otherwise I may just be confused about the interface.