Hello!
So i updated my Macbook Pro Mid 2014, Retina from Mountain Lion to Big Sur. Unfortunately i began to have problems with Ableton live (music production program), therefore i wanted to downgrade it again. I created a bootable USB Stick first with Mountain Lion, then with Catalina but both failed. I was able to choose the USB with the OS to boot from but after a bit of loading screen a Stop-Sign came
Does anybody know what i can try to fix this problem? Thank you so much for your help!
So i updated my Macbook Pro Mid 2014, Retina from Mountain Lion to Big Sur. Unfortunately i began to have problems with Ableton live (music production program), therefore i wanted to downgrade it again. I created a bootable USB Stick first with Mountain Lion, then with Catalina but both failed. I was able to choose the USB with the OS to boot from but after a bit of loading screen a Stop-Sign came
Does anybody know what i can try to fix this problem? Thank you so much for your help!