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Yeah, we don't support distribution here. Since you have an OS running, you can download a clean image from Applestore. Use the createinstallmedia command to create a new USB installer, keep the same EFI folder. Now you can do a clean install on the system

This is what they are set to if you install the ThinkpadAssistant.app F1: Mute Audio (with Status LED indication) F2: Volume Down F3: Volume Up F4: Mute / Unmute Microphone (with Status LED indication) F5: Brightness Down / Dim F6: Brightness Up F7: Screen mirroring / Screen extending F8: Activate / Deactivate Wi-Fi F9: Open System Preferences F10: Activate / Deactivate Bluetooth F11: Show Destop F12: Open Launchpad FN+Spacebar: Toggle Keyboard Backlight

Oh, so the laptop has a miniDP connector, no HDMI? if you want to use the rest of the Fn keys, see my T14 gen1 guide on my signature. Just need to add thinkpad assistant app

Welcome to the forum.

Hello and welcome.