I too have iphone 7 plus with iOS 14.2 and it draining very very fast! Apple need to fix this problems man.

For 3 days and 3 nights I cannot seems to update to MacOS Big Sur 11.1. I have the same issues guys on my mac mini 2014. It somehow brick my mac mini. I get the work arounds. I use the Internet Recovery methods to get the things done and have it updated to Big Sur 11.1. I apply the Command-Shift-Alt-P-R something like that and it gives a Globe Spinning screen...and I have to get connected to the Wifi network. It download via Internet Recovery. And download the Big Sur 11.1. But somehow upon booting or restart I notice that the progress bar are stuck. I have to reset PRAM 4 times to get it to fix the problem. And done a Disk Utility fix on my hard disk. Some of the mac users are having the same issues with their Apple Silicon M1 macs. Their get around to fix this issues is to make use Apple Configurator 2 with another mac to do recovery.

It could be the tk problem with Big Sur 11.1 or the Gatekeeper is blocking the app.

please go to this link with url type https:// and type in bugs.python.org with forward slash / and type in issue42480

Hi Have you try to download the latest version of Virtualbox 6.1.18. Uninstall the current version that you have, and install the latest version. Allow the software from the Gatekeeper. And restart your Big Sur. I am currently using Big Sur 11.1. With Intel Mac Mini. Please take note that Virtual Box currently not working with Apple Silicon Macs.

Alright, Apple have fix the issues with Big Sur 11.2! Woohoo! Home Run!

Apple have fix the firewall issues with well known ex-NSA Hacker, Patrick Wardle on Big Sur Firewall bypass exploits. Firewall Exploits have been remove with the release of Big Sur 11.2

Are you currently using Big Sur 11.1. As I too get the same exact message with my Mac Mini 2014. When I am using Big Sur 11.1. I would go to Internet Recovery to download the Big Sur 12.2.1. As I am using Intel Mac. This is also occurs with the Apple Silicon M1 Mac.

Any luck with PRAM Reset??? I used Command R and do the Internet Recovery Methods connecting to the internet. With my Mac Mini late 2014.

Have you guys try to do the Safe mode method????

If the download completes successfully, but macOS Big Sur won’t install, there are a few things you should try. Reboot your Mac in Safe Mode by holding down Shift while it boots. Then try and install Big Sur again. Reset NVRAM. Shut down your Mac. Boot it while holding Cmd + Option + P + R. Release the keys when you hear the startup chime or see the Apple logo on screen.

Will check again with my iphone see if they are still having problems. In the mean time check the Apple System Status web site. I think last Sunday Apple are having Servers maintenance at their end.

I get around with it by download the Big Sur 11.4 via the Apple Apps Store. As I too having the same problems downloading via the Software Updates. Have you try to download the Big Sur 11.4 via the Apple Apps Store???? Try that. And install directly to your mac. I had mine already updated!

Have you try type in command line via the terminal with this command. softwareupdate --fetch-full-installer

Try this one with the terminal softwareupdate --fetch-full-installer --full-installer-version 11.4