what I used to do was find out where they are releasing the update first geographically for feedback and and reassurance it working smoothly I just use a VPN change my location to that company and got it at the same time as that country last time I did it was with a Samsung Galaxy S10 I wanted and native screen recorder which was available on the Note 10 plus so I could get it by changing my location to Germany I just decided to buy everything should be right as in when they are released the Galaxy Note 20 ultra was my previous phone S21 Ultra is my current my biggest disappointment was the S20 Ultra the step up from that phone to the note 20 ultra was dramatic I love my note 20 Ultra but the S21 Ultra is another step in the right direction
