I have problems updating my MacBook Pro (2016 edition) to the latest version 11.2.3 Big Sur
First of all, I am running on 11.2:
sw_vers
ProductName: macOS
ProductVersion: 11.2
BuildVersion: 20D64
Now my System tools will announce that the 11.2.3-update is ready and pester me to install it. When I click "Update", it will start downloading a 2 MB (yes, MEGAbyte) update in an extremely slow speed. This takes around 10 minutes. Then, hooray, an update has been found: "11.2.3", weighing 2,5 GB. Downloading this then takes a day. A whole day! If not more!
Its not my connection, which is with approx 10MBit good enough I would say. In the meantime (i.e. in parallel), I updated IntelliJ and my entire MS Office without problems. Also, I have plenty of disk space free.
Now, after downloading the 2,5GB, the Mac will ask to restart, then announce that "there's an update". Guess which one it is? "Big Sur 11.2.3".
How to get rid of this and install 11.2.3 for real?
Best Answer
I've had success with doing one or more of the following:
Content Caching
Official Standalone Installer
VIEW
on the top result of macOS Big SurGET
Terminal
First-party software can be updated from the terminal using softwareupdate.
softwareupdate -l
sudo softwareupdate -ia
softwareupdate --fetch-full-installer --full-installer-version 11.2.3
Semi-official Standalone Installer
Another route is pulling the standalone installer from Apple's CDN via an open-source Python script called installinstallmacos.py.
Install
git
git
isn't installed or raises axcrun: error
, install/updategit
brew install git
Setup script
Choose OS and download installer (output edited for brevity)