Software Update Failed Error for iOS 15.7 on iPhone 8

I try that on computer but they want you to install iOS 16 it not possible to downgrade back to iOS 15

I'm in the same boat with XR. installed it on iPhone X no issue, option shows up on iPhone 7 but not on my iPhone 8.... what's going on w/ Apple LOL

Many say they have “plenty of storage”. Try clearing to a super amount of (15-20 GB) available and try again.

I have the same phone and it keeps happening to me, I have been trying for the past 2 hours and it just won’t work

I already tried resetting the phone and it’s not working. I don’t have a Mac or a PC. This is absolutely ridiculous!

same thing keeps happening. Why has Apple not responded to these complaints? I am new to this community - does Apple respond or are we left on our own?

Apple supposed to fix this problem

iPhone 12 here and getting the same error message. I’ve shut the phone down and restarted… still getting the same error message.

Well, for no specific reason, I tried to update again, and it worked. I didn't do anything differently and didn't delete any data beforehand.

This is a crazier one. My software update doesn’t even show 15.7 as an option. Only iOS16 lol

15 Minutes is lightning fas for an update. I usually jus start it and go do something else come back an hour later.

Reading other replies here, I had to free up >6GB of space for it to install.

Same issue on iPhone XS. Update wouldn’t download until I had freed up >10GB of storage space. Once that much space was available, update proceeded seamlessly

I want update my iPhone