Have you seen my thread over here?
https://www.tonymacx86.com/threads/big-sur-installer-comes-up-with-failure-while-loading-the-installer-please-download-again.306590/
So, i finally figured it out. For anybody else having this problem:
Just reboot your system and remove the checkbox for opening every application on system startup again.
Don't ask me why, that did the trick for me. After a clean reboot, I just launched the update, no error, then it rebooted...
With the newest release of Big Sir (and this installer is working on a MacMini), I just receive this message saying the installer is corrupt. Whats happening here?
Alternatively, it comes up with the second attachment.
The eventlog says:
InstallAssistant[3067]: Stopped operation queue with...
I did not try this again on my MBP because Big Sir was already on it.
I updated a friends MacMini to BigSur, copied the Installer before starting the update.
Right now transferring to my Hackintosh and will try again, I hope it works now.
After hours of trying to get Big Sur working, I always ended up with errors saying I should again download my installer. So I switched back to Catalina, which works perfectly.
I'm sure this has to do with the Apple-Installer, it just doesn't work properly (at least here in Germany).
Hopefully...
No matter what I try, I get a corrupt version of the Big Sur installer.
I even tried to download it with my MBP, copied it to my Hackintosh and started it.
It says corrupted installer or failure while downloading. Maybe Apples server have problems again?
I changed to OC, works perfectly with Catalina.
I downloaded Big Sur from System Preferences, started the Installer and it only comes up with "Failure while loading the installer, please download again". Right now I'M downloading the package with gibMacOS.. strange things happen here.
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