I tried downloading the Big Sur Beta 8 from AppleSeed for IT and the Apple Developer portal but it keeps saying Update cannot be found and am unable to get the full installer only an upgrade in certain occasions.
Big Sur Beta 8 - Full Installer
Im have MacBookAir 2020 and not accept update beta 7 to beta 8. Im think Apple not consider your costumers that help with betas. Its not looking good receive error message said that need full installer. Weird a program so beauty and advanced have this messages.
The upgrade from Beta 7 to 8 worked only once. In my case, I need to try a full installer to re-image as I am testing enterprise deployment and configuration where I need to be able to test end-to-end macOS configuration.
I have a full Beta 7 installer, but a few things appeared to have changed in Beta 8 that are working now
I have a full Beta 7 installer, but a few things appeared to have changed in Beta 8 that are working now