Big Sur 11.1 update not installing

Suggest disconnect any other devices using the Wifi ( if doing over Wifi ) or connect via ethernet connection. Keep the computer active during the download process meaning, do let it idle or sleep even if need to Mose mouse every 20 minutes and that is all. Have found when it say 15 minutes remains it really means 30 - 45 minutes in real time. At 10 minutes remaining means 30 - 45 minutes etc. Patience, patience and try to keep cool - the process is long.

Good Luck

MacMini (2018)  -- After numerous tries from restoring the OS from Recovery, to booting into safe mode and trying to install, to running disk first aid ... the one method that worked was to boot into safe mode, download the 11.1 complete version from the App Store, and install that.  That method went without incident.  

MacBook (Retina, 12-inch, Early 2016). — The update worked as intended, but it took almost 1 3/4 hours to complete. 

Hi All, Via recovery mode not work because a disc space issue so I had to try another way. I disabled the Norton protection software and tried the full version installation again, working! Quess it also was the reason update failed. Thanks and enjoy Xmas!

If nothing above worked for you then you might try how I solved this or rather how the computer automatically solved it on it’s own.

I have a 128 Gb SSD in Macbook Pro 13 inch early 2015. There is hardly any disk space left on this and my workdisk is an external SSD. I had enough space for the update to download and run on the primary SSD, still the download would fail by showing faulty internet connection (which was not technically correct as I have a very stable 300 mbps wired connection).

I tried all the above mentioned steps. None worked for my Mac. In the end. I went on to change the system preference from manual update to auto update. Voila, 4 hours later the system was ready to install the latest update. I didn’t change a thing.

I hope the engineers can figure out a way to reduce the size of pre-installed apps. I don’t use many of them and with Big Sur, I can’t delete them as well. Please Apple let the user/admin of the Mac delete the unwanted apps, people do have old machines with measly SSD because they were very expensive and some made the order without checking the final check.

Thank you!

Great, so in the Apple Apps Store it allowed you to download the Full Installer11.1 to run over the existing Big Sur 11.0.1 ?

Thank you for the clarification - good to know this.

just download Big Sur from the App Store but no luck here; it stops with 'no internet connection' :(

called Apple and they advised to use the recovery mode.

Have seen others going that route and some have had success - very best and keep us posted if you would

thanks. that worked, as suggested!

yes, of course! thought I'd done it initially! now the helpful box is blanked out on my screen, maybe I need help with that!).