Hi, I have the same problem, or at least a very similar one.
Three days ago my phone suddenly shut down (at a battery level of about 50%). When I tried to boot the phone, it stuck in the booting screen as described above. At some point a counter appeared on which it said “X of XX apps updated”, like the one that appears when restarting the phone after an update. Once the counter had reached the top, the booting screen appeared again.
I tried to boot the phone for about an hour, and suddenly, out of nowhere, it worked again and I could use the phone for about half an hour, before it crashed again.
Again the phone updated the apps and again it stuck at the booting screen. And again it worked at one point. But only for a few minutes, before it shut down again.
Since then the phone shows the same behavior as shown in the video above. At the beginning the phone reacted when I plugged it in, but now it doesn’t react at all when I plug it in and just stays completely black.
I already tried to disassemble all modules, tried to charge the phone for hours, let the battery drain. So far nothing helped. Has anybody figured out a solution so far?