![]() Sep 27 09:07:53 MacBook-Pro osinstallersetupd: Retrieving 0 packages (0.000 GB) I checked the logs and it all starts in this section: Just 12 minutes before finish i got this error. Same issue via recovery mode and installation from scratch. Before complete SSD wipe out it had the latest Bir Sur as for beg. Its crazy how this article is from November 17, 2020, and today i found it because i had the same problem on MacBook Pro from 2015 (Model A1398). macOS Big Sur Reinstall on an Apple Silicon Mac running the shipping version 11.0 (20A2411) Credit MacRumors Forum user craigslorach. failed to personalize the software update. You will get this error.Īn error occurred preparing the update. ![]() When the macOS is reinstalling the Mac will attempt to personalize the version that is being installed. The only way to recover is by using a 2nd Mac with Apple Configurator 2!! It doesn’t matter if you are using macOS Recovery or Big Sur USB Installer, you will be unable to reinstall Big Sur!!! ![]() ![]() UPDATE 11/18/20 – I originally reported that this error would happen on a factory build of Big Sur 11.0 (20A2411) but it also happens if you are running 11.0.1 (20B29). UPDATE 11/19/20 – It looks like Apple has fixed the issue! I’ve just finished reinstalling macOS Big Sur from macOS Recovery and from a USB Installer drive. If the first two items don’t work, you can follow these instructions from Apple.Click the Recovery Assistant menu bar item at the top and then select “Erase Mac”. Enter in the command resetpassword This will bring you back to the Recovery Assistant menu. ![]() If you don’t have FileVault 2 Enabled or have already erased the drive, click utilities from the top menu bar and then click Terminal. If you have FileVault 2 enabled, click the Recovery Assistant menu and then select “Erase Mac”.
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