macOS Big Sur 11.5.1 Update [SECURITY ISSUE!] What’s New in 4 Minutes!!!

MacOS Big Sur 11.5.1 (20G80) Update is live! This update fixes a SERIOUS ISSUE! This video will be a quick 4 minute overview of all the macOS Big Sur 11.5.1 information that you need to know!

The Big Sur 11.5.1 update was released on July 26th, 2021. This replaced the macOS Big Sur 11.5 update that was released 5 days earlier.

0:00 Start-Intro
0:20 Details of the update Build Number and sizes
0:47 M1 Firmware and BridgeOS + Full Installer & IPSW
1:36 How long does it take to install the update?
2:15 macOS 11.5.1 Security Update
3:28 Geekbench 5 Score before and after update

macOS Big Sur 11.5.1 What’s New? Features & Known Issues – Article!

MacOS Big Sur 11.5.1 Update Security Notes

Big Sur Patch notes public link =

Download Full macOS Big Sur Installers InstallAssistant.pkg –

macOS Big Sur 11 Releases
Big Sur 11.5.1 (20G80) – 7/26/21
Big Sur 11.5 (20G71) – 7/20/21
Big Sur 11.4 (20F71) – 5/24/21
Big Sur 11.3.1 (20E241) – 5/03/21
Big Sur 11.3 (20E232) – 4/26/21
Big Sur 11.2.3 (20D91) – 3/08/21
Big Sur 11.2.2 (20D80) – 2/25/21
Big Sur 11.2.1 (20D74) – 2/09/21
Big Sur 11.2 Final (20D64) – 1/01/21
Big Sur 11.1 Final (20C69) – 12/14/20
Big Sur 11.0.1 Final (20B50) – 11/19/20
Big Sur 11.0.1 Final (20B29) – 11/12/20

Support Mr. Macintosh!

– Apple Mac Enterprise IT Blog & macOS News for MacAdmins


Mac Transition to Apple Silicon Everything you need to know!

New Article How to reinstall macOS on your Apple Silicon Mac

macOS ISPW Firmware Database – Download Full macOS ISPW Files!

Download macOS Big Sur Full Installers via InstallAssistant.pkg

macOS Updates Database! – OS, Xprotect & App Version Database

Interested in Xcode and Swift? Subscribe to the Swift Goose!

Subscribe to “The Apple Ninja’s” YouTube! If it wasn’t for him, I would not even be on YouTube today. Thank you!!!


Xem thêm:

About admin

Check Also

Using Windows Keyboards on macOS Big Sur [Setup]

Using Windows Keyboards on macOS Big Sur [Setup] If you don’t like the keyboard that …


  1. The macOS Big Sur 11.5.1 Update is live and fixes a very serious security issue. Let me know if you have any questions!

  2. After deploying 11.5.1 to our employees we started to get many reports of long (5 -10 minute) login times. Has anyone else seen this?

  3. after reading all the comments i won't update my macbook air m1.

  4. Help !! After the update, my MacOS won't boot

  5. I have macbook pro 1.4 ghz i5 8 gen almost 2 years used, it was giving me battery backup of good 6 hrs before this update and now my battery is dying within 2 hrs 🙁 what should i do

  6. uhhh…

    are you Nardwuar????

  7. After update 11.5.1 my MacBook Pro turns off when charger is disconnected and when re connected it was restarted automatically…
    Plz Help Me 😭😭

  8. after my update my pages or documents won't open!

  9. If you have 11.4 installed, is this a necessary update? Or does it just fix a flaw introduced in 11.5?

  10. Doesn't work, finishes downloading then says failed check internet connection. tried getting it from the app store, same result. All sorts of work rounds from the Apple geeks unfortunately I have a 74 year old stroke damaged brain that can no longer follow what they are saying. Another Apple update screw up

  11. God this creamed my knickers, please keep making videos like this, I was quite confused as there was a lot of hype behind Monterrey or what ever but I have to admit when I say your title of security issues my balls climbed inside a little …. Something in me knew this wasn’t clickbait

  12. there's big IO problems using Parallels Desktop … very very very choppy

  13. How can we know if one’s iPhone was targeted? Would we notice any odd behavior?

  14. It’s stuck on preparing mac ks 11.5.1 for hours now (says about 10 minutes remaining). What do I do? Please and thank you.

  15. Currently, I am on Big Sur 11.1, should I wait for 11.6 or update now? If updated now, then won't this issue faced by me?

  16. My Mac definitly runs hotter with the new update. Does anyone have the same problem?

  17. Can I update Macbook 8,1 running Opencore legacy patch natively without repatching?

  18. very cool i should update now

  19. My m1 Mac has now crashed out to recovery mode during the install!!!!!!

  20. this update has made my life a total misery, kensington mouse software stopped working properly, had to replace with steermouse, ssl2+ interface randomly stops working, had to reconnect 3 times today so far just to get sound, and my keyboard randomly stops working, just reconnected for the fourth time today so i can type, total and utter shite

  21. I am no longer able to connect to ethernet since I updated to macos 11.5. When I run systemextensions in command, it shows that [activated waiting to upgrade on reboot]

  22. @Mr. Macintosh after updating 11.5.1 again I had that pop up msg again saying that your system is potentially at risk after couple of hours use. can't really understand what's going on with this new update. should I switch back to 11.4 ??

  23. My m1 air has been crashing every week now. it goes into a purple pinkish screen and then it restarts and give me a message that a kernel panic has occurred. Will this update fix it? and also my cursor is always laggy/ glitchy even when im using just the trackpad.

  24. I'm at around 25 minutes, still going, says 8 minutes remaining.

  25. My update is stuck at black screen progress bar. It's been 30 minutes. Its aproxx 78 % right now.

  26. Hi. I was able to check the update through patched sur but it was going to download the whole os again so I stopped it. LOLS. Any other way to update?
    Love the vids thank you.

Trả lời

Email của bạn sẽ không được hiển thị công khai.