When I boot up holding the Option key the fans are spinning, but nothing happens, and the external display doesn’t show anything. I prepared the USB drive following instructions on your last YouTube guide. (And the battery is dead, it shows 1% charge) I have a MBP (10,1) running Catalina and the built in display is not working – I use an external monitor via HDMI. All the pkg does is install/move the app to your applications folder. The InstallAssistant.pkg is just a standard package that includes the full macOS Big Sur installer.app. MacOS Big Sur 11 Beta Full Installer Download macOS Big Sur Beta Download macOS Big Sur 11 Final Full Installer Download Big Sur Production Download Past this link into a new tab and it should start to download. NOTE: Depending on the browser you are using, you might need to right click and select “Copy link address”. apple-silicon-m1-full-macos-restore-ipsw-firmware-files-database/ If you are looking for Apple Silicon M1 Full IPSW Restore files, go here > If you are looking for macOS Catalina, Mojave, High Sierra, Sierra or El Capitan look here > The InstallAssistant.pkg is not available for Catalina or Mojave. This change was made when Apple revised the full installer for Big Sur. Once downloaded, all you need to do is install the pkg and the full installer of Big Sur will be in your applications folder.

The InstallAssistant.pkg is stored on Apple’s servers and contains the full “Install macOS Big Sur.app”. This file is the same full installer that you would download directly from the App Store for Intel and Apple Silicon M1 Mac Computers.

This database will contain download links for macOS Big Sur full Installer pkg files (InstallAssistant.pkg). Download Full macOS Beta & Prod versions of Big Sur with one click! macOS Big Sur Final & Beta Full Installers

Big sur on unsupported macs