Mac OS Sonoma 14.6.1 download stops partway, is there another way?
I'm on an Intel 2020 iMac on Sonoma 14.5. I'm trying to upgrade to 14.6.1 via the App Store, and via System Preferences Software Update. It hangs part way and quits saying that it is unable to continue with the download. It says to check my internet connection which is fine for other apps and for other machines. The Apple How to Download and Install MacOS page doesn't seem to give any other options that work for getting the installer.
My question is: I've noticed that a number of help sites, ie. OSXDaily and Clarified have both pointed to this page It's not a site I seem to be able to get to directly, so is it safe to download from here?
Background on this problem. I had been noticing that Preview wasn't opening jpegs and pdfs, saying that the file was damaged even though I could open the same file perfectly well on my other Macs. I therefore try to start the Mac in Safe Mode, but each time I tried to do that, it seemed to hang, ie. it allowed me to log into safe mode and then it would ask for my password again, but the screen would go black within 2 seconds, and did not seem to be taking in my password, so eventually I had to shut it down, after which I could not restart until turned off the power and removed the plugs for a minute and then replugged and restarted. So it is impossible to go into safe mode, have tried it several times. I was hoping to redownload Preview but that seems to be part of Sonoma, so I decided to try to update to Sonoma, but now can't seem to. I don't need to reboot Sonoma 14.5 as that's working fine apart from a problem I'm having with the Preview app, so using MacOS Recovery doesn't make sense. Any help gratefully accepted.
[Edited by Moderator]
iMac 27″