If you use installinstallmacos.py to attempt to download macOS Big Sur 11.0.1 (20B29) curl: (22) The requested URL returned error: 403 ForbiddenĬould not replicate : Command '' returned non-zero exit status 22 If you were able to download the full Big Sur installer before this issue happened, then you are one of the only people with a full installer right now! Maybe you can burn it to a Dual Layer DVD and sell it on ebay haha! (will have to be a blu-ray disc as a DL dvd is only 8.5GB and the Big Sur Installer is 12.2GB LOL)Īfter digging in, the issue is with one file installassistant.pkg installinstallmacos.py is working for me but I’m still getting the error in the Software Update pane. UPDATE 11/12 7:00PM CST – Some users are reporting that the download is starting to work.

UPDATE 11/12 7:30PM CST – The download is working in the Software Update pane now. Install this package and it will put macOS Big Sur into your /Applications folder! What this will do is download the entire InstallAssistant.pkg file. UPDATE 02/20/21 – I’m still getting a bunch of people reaching out saying that they are still getting the error even after Apple fixed the issue! You can download the full macOS Big Sur installer directly from Apple’s servers via Safari. A few hours later, users started to report download problems. macOS Big Sur was launched at 12:00PM CST. MacOS Big Sur 11.0.1 – Installation failed An error occurred while installing the selected updates.

An error occurred while installing os x