无法使用要求的macOS版本。如何修复教程。macOSCatalina公共测试版

即使注册Beta版，我也无法安装catalina。它表明您Mac已经是最新的。

After wasting a day trying to install beta 05 - macOS Catalina, here is the workaround I came across.

Here's how to fix it:

Open the terminal

Run code below

sudo /usr/sbin/softwareupdate --set-catalog https://swscan.apple.com/content/catalogs/others/index-10.15beta-10.15-10.14-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz

now, delete the existing file if there is any.

sudo rm /Users/Shared/.SeedEnrollment.plist

Create a file using nano.

sudo nano /Users/Shared/.SeedEnrollment.plist

paste the following code:

SeedProgram
PublicSeed

You can get away with command+c and command+v. Press control+z and then Y to save the file.

Now, things should be sorted out - check the update settings and it should display beta version.