New iPhone 15pro issue - eviltoast

Hi everyone, so I got the iPhone 15pro yesterday, I had the iPhone X originally, I’ve been trying to set it up, but have been stuck for more than 8 hours on the downloading software update process! The blue line has moved since yesterday, but now it seems like it’s finished, but nothing is Changing on the screen! Can anyone help? Or should I wait another 8 hours, which is driving me crazy, as this never happened before!