Problems installing Big Sur 11.2 update

Beansoft:

SUCCESS FINALLY!!!! Thanks to your suggestion, I simply went to the Apple Store Update tab and downloaded the entire Big Sur 11.2 update package from there. It took an hour. I watched TV during that hour. Then I returned and started the install. I played with my iPad for a couple of hours. When I returned to my iMac Big Sur 11.2 was installed with no issues. It is working perfectly. This approach was easy and trouble-free. If Apple had suggested this approach I would have not wasted hours over several days. I shall remember this in the future.

Adding on to @Matti Haveri - one can do the Safe Mode and do the Apple Apps Store download full installer.

Big Sur 11.2.3 is available. You can update 11.2.1 and skip 11.2.2.

I could not get 1 to 2 to work no matter what I tried. 1 to 3 went on without any problems.

From app store, install 12 gb file of big sur. Then update using system preference. It worked for me.

OK, today I could download Big Sur installer in safe mode OK. I wonder why such tricks are now needed for installs and updates.

p.s. I cleanly installed Big Sur from a USB flash drive to a freshly erased internal drive and it went smoothly.

YES They are. I did this way and resolved problem.

1 : Shutdown >>

2: SAFE-MODE(REBOOT see below)

• IF Your Apple silicon(M1): Turn on Power and hold power button >> until you see the startup options window

>> Select Options>>Continue>>reinstall BigSur OS

• IF Your Intel processor(OLD): Connection to the internet. Then turn on Power and immediately hold Command (⌘)-R >> until you see an Apple logo or other image >>reinstall BigSur OS

SAFE mode

I have Mac OS (M1) Big Sur did not download for 10 times.

Actually I reboot again and recover Big Sur, Now finally I Done it.

1.  Apple menu > System Preferences, then click Security & Privacy.
2. Click the FileVault tab.
3. Click , then enter an administrator name and password.
4. Click Turn Off FileVault.

[ ReBooting your M1 Mac to macOS Recovery ]

1. Click the Apple menu and choose “Shut Down”.
2. Now press and hold the power button until you see “Loading startup options”. (40sec around)
3. Click “Options”.
4. Lastly, click “Continue” and enter the password for an administrator account, if requested.

Booting your Intel-based Mac to macOS Recovery

The process of starting up Intel-based Macs from macOS Recovery has not changed. To use this mode, simply press the same Command (⌘)-R keyboard combination as before.

1. Press and hold your Mac’s power button for at least 10 seconds to turn it off, then let go.
2. With your Mac computer turned off, press the Power button to turn it back on and immediately press and hold the Command (⌘)-R key combination on the internal keyboard.

It feels like Apple does not want me to upgrade to Big Sur ... today I finally decided to make a clean install from Mojave to Big Sur on my main internal drive but the three attempts all taking 60 minutes to download the current Big Sur installer ALL failed at the VERY FINAL "The update could not be verified. An error occurred while installing the selected updates". Duh! I'll try later maybe in safe mode which seems to be the current trend :-/

Or maybe I just wait for Apple to get its act together and send feedback to:

https://www.apple.com/feedback/

Sounds like the M1 chip. To verify go to the apple Icon (top left) and "About This Mac". It should identify the chip - intel or M1. The M1 procedure is a little different - google it for the procedure.

Thank you very much for this input. I had problems once again with the second/latest Big Sur update a couple of days ago and once again, used the Safe Mode to install. Like many other users, I am rather disappointed with Apple that there should be these problems with their updates.

But with my MacBook Pro I can only connect wirelessly to the router, so perhaps this is an issue. With my limited knowledge, I would be reluctant to start fiddling with router settings but if these problems continue, I may need to investigate this further.

Thanks again.

jvilella wrote:

Nothing has changed on my network configuration for quite a while.

So you openly admit that you haven't updated the firmware on your router "for quite a while"?

Which router are you using?

I tried to update Big Sur on my 2015 MacBook Pro to 11.2.3 and without making any changes I clicked on the update button in Software Update and the update failed with the message "Download failed An error occurred while downloading the selected updated. Please check your internet connection and try again."

The upgrading to Big Sur from Catalina and all the subsequent updates to Big Sur have failed on my MacBook Pro initially. They all fail during the installation phase after the download phase when the installation process says "5 minutes remaining"

I've put a post earlier here in this topic outlining what I did to resolve it. I applied the workaround outlined in the earlier post each time a Big Sur update fails.

I think there may be various causes of why installing and updating Big Sur is happening.

I can only say that my workaround has always worked for me when the installation process has 5 minutes to go.

Chances are my workaround won't work for update failures occurring at other points during the update.

Valid point .

In reality either / or plus the Suggestion of via Recovery Mode - all three could provide possible but not definitive solution give individual circumstances.