Solved! Go to Solution.
Having exactly the same issue on a galaxy a7 that I've had less than 2 months.
There seems to be no way to manually remove the existing app version (if there is its exceptionally well hidden).
This is a very disappointing sign of ineptitude or inability to plan a process. Not sure which I should hope for.
It may have been more understandable (but not acceptable ) to have this kind thing from a cheap smart phone manufacturer but it's not what I would have expected from a company with the repute and market lead of Samsung.