Samsung has released bug fixes to the Galaxy Watch4 and Galaxy Watch4 Classic. Apparently, last month's major firmware update for the pair caused a few problems, despite being aimed at introduced new features to Samsung's first One UI Watch smartwatches.
https://www.notebookcheck.net/Samsung-fixes-issues-with-the-Galaxy-Watch4-and-Galaxy-Watch4-Classic-after-their-last-major-firmware-updates.606159.0.html
I've had this EVB4 firmware since Feb 27th.
All samsung watches since the gear 3 are dangerous. When charging sometimes you get a yellow or red triangle and the watch is overheating to the point of fire!!!
Also when talking on lte the watch says overheating and starting battery saver and discos your call. These are on ALL samsung watches since gear 3 . I've complained and they do nothing to fix this. I'm reporting this to US government to check.
I'm at version EVA9....and no updates available