There is no real danger.
What you do is download and install, without uninstalling your old one.
Open new wallet, put your password and your in, your key where your balance is should be there.
Now a lot of times people did not see their balance, what you do;
There is now 2 tabs, one for home and one for archive, if you don’t see your balance, send that key (to archive) and then bring it back (to home) and it should show your balance.
There is no need to worry and do stupid panic things, you can always go back to old wallet.
When you are satisfied, you go in control panel and delete old wallet.