So, brand new S23 Ultra needed OS updating via USB. I've used Smart Switch in this way for my previous Galaxy S9+, so was not expecting problems. However, it was problems I got in the form of a, seemingly, never-ending 'Checking the downloaded update files...'. After 1 1/2 or so hours there seemed no point in continuing. It was running on Windows 10 x64 on a 10-core 5 GHz machine, so how long could checking a few GB file take? Anyway, suddenly realised was running an old version of Smart Switch (2018) so updated to the latest v 4.3.23022_1. At first, it appeared great - the GUI was obviously updated and the download went well. Then, to my horror, the old style dlg box appeared and the same thing happened.
I've inserted an image of the dlg box, in the feeble hope that someone will say it shouldn't look like that, and somehow the older file check procedure is being called by mistake.
Otherwise, what's going on? Something on the phone, though the Smart Switch Android app has also been updated? I've got no clue - it is very strange in that the program still uses CPU, so has not hung. Why can Samsung engineers not figure out how to catch errors like this? Maybe something else is at play - but I'm stumped.
Thanks for the reply. I would rather use USB for updates since it comes from a wired computer, so no microwaves. Am trying to avoid them, especially at home where there are basically no wireless transmissions at all. I got badly burnt by them once and after that realised how dangerous they can be.