After updating my S10 to One UI 4 Android 12 it now shows 'Downloading English Update'(waiting for network connection). This happens every time the phone is turned on. I have a network connection but the update never downloads.
Try clearing the cache partition on the phone and that should resolve this issue. To do this, just search 'how to wipe cache partition S10' and you should find what you are looking for 😀. Hope this helps! 😉