Add the following to the end of your target line of your steam start up shortcut:
-beta red2beta
It will update the retail RO 2 build, not the beta.
I've updated the original post to make it more clear.
Anyone got this to work.. I added it to the properties of the shortcut , applied it and it just starts steam up as normal and then starts the game as normal.
How do i roll back to the retail version?