Sunday my iphone 12 pro max updated to 17.5.1 and now it's crashing constantly. Followed the steps in the above link: First did force reset(s). Still rebooting. Next, did reset of settings. Still rebooting. There does not seem to be a common denominator, but twice happened when I was listening to music over Bluetooth, so I disabled BT. Then it crashed when I was listening over speaker. Removed all VPN/networking configurations.
This only occurred after updating to this 17.5.1, and has always been pretty stable, and my phone will randomly reboot multiple times per day. I have removed unneeded apps, and done minimal setting configuration, and tried everything short of doing a factory reset. Also removed a lot of data, both on device and in iCloud. Battery health is 86%.