The OP only has 2 entries he wants to change so it would be easier to manually edit those 2 fields versus running an update query.
Unfortunately, due to the changes Plex has made to the database, DB Browser just won’t work.
Alternatively, change the system date on your server and Plex Dance those 2 episodes. The added_at date will then be the date you changed the system to. Don’t forget to change it back afterwards.
