you can install with 3 methods
1st method:
https://github.com/Jax-Core/JaxCore/releases/download/v50410/JaxCore_v50410.rmskin
2nd metod:
iwr -useb "https://raw.githubusercontent.com/Jax-Core/JaxCore/master/CoreInstaller.ps1" | iex (run this in powershell with administrator)
3rd method: https://jaxcore.app install and run the .bat file