My Galaxy S22 Ultra started doing this as well. I updated the phone, and then the next day on May 25th it just shut off while I was using it and went into the continuous boot loop. It did this for a few days and I could not get the phone to do anything. I took it to a local Samsung store and they replaced the battery, thought the issue may have been fixed, then called and said they couldn't figure it out. I put the phone aside and just forgot about it.
Almost 3 months later, August 17th, I decided to see if time would help and if I could mess with it a little more. I charged it up and OMG! It booted up like normal, I couldn't believe it! Figuring it was related to the update back in May, I quickly made sure everything was backed up and found there was a new update to be installed. I processed the update and just 2 minutes later it started boot looping again. I had the phone working for a total of 10 minutes.
When the issue first started there weren't many others who were having the same problem. But now I am seeing that if you search on here there are many other people having these issues with their S22. I found this thread and tried the things the mods suggested. Cache wipe did nothing. I tried that a few times. Then I finally decided to do a factory reset. It's been a few months and I can't use the phone anyway, so may as well give it a try. I did the factory reset and it did not help at all. It is still just boot looping over and over again. This is apparently a major issue with Samsung and this needs to be addressed by them.
