I had some trouble updating my Mac to macOS Big Sur 11.3.1. The update would remain stuck at “About 10 minutes remaining”, even after leaving it on all night.
![](https://www.mylearning.be/wp-content/uploads/2021/05/bigsur-update.png)
The only way to get it to install correctly, was to reboot in Safe mode:
- Shutdown your mac
- Power it on again, and keep the Shift key pressed
- Release when you get to the login screen
That fixed it for me. More info on Safe mode here.