If i start from the FSDT installer it constantly say I have UPDATE 1 Selected even after a UPDATE ALL, why is this? I have MS2020 and P3dV4 products both not on hide
I don't understand what your problem is.
After you do an "update all", when it's done (again, updating ONLY the products you have installed, that's what "all" means, it wouldn't make any sense updating something which is not there ), it will go back to the default situation, which is the first product on the list selected ( that's what "1" means ), because now it's waiting for you to do something else.
That's because the product list can use multi-selection, so if you select more than one product, the "Update 1" button will change, showing how many products you have selected, and will be checked for update IF you press the Update (x) button.