I have a 2024 iPad Pro M4, never had any issues with it. Have installed any updates that have come along since getting it in July, no issues. So I went to install iPadOS 18, it downloaded it, prepared it and then said “Unable to Verify Update”. I tried many times. So finally called Apple Support. They said, after putting me on hold to investigate, that it is unavailable world wide for the M4 iPad Pros. You would have thought telephone support would already know that. They said try again in a few days. Anybody else experiencing that?