Howto update Camera Raw in Photoshop CS6 on Windows Vista

Hi there,

i am trying to update the Camera Raw Plugin in Photoshop CS6 to the latest supported version 8.3 but i can not make it work...

What i want?

I want to view the RW2 Raw files from my Lumix GX7 in Photoshop CS6 and Bridge.

Lumix GX7 needs minimum Camera Raw 8.2 as of this site Camera Raw plug-in | Supported cameras

Camera Raw 8.3 is supported for CS6 as of this site Camera Raw-compatible Adobe applications

I found this link Keeping Photoshop Up-To-Date but there is only the latest version 8.6 available which does not support Windows Vista.

On this site Adobe - Adobe Camera Raw and DNG Converter : For Windows : Adobe DNG Converter 8.4 there is only the DNG Converter available.

Help Information in Photoshop shows Camera Raw 7.0 installed and now updated available (up to date).

The only other file i found was Camera Raw 8.5 here Camera Raw updates cannot be applied but does not help me either...

Has someone solved this problem before and could tell me how? Am i missing some hidden option to make the update work?

Greetings from Germany