Thanks @Lorys89 but it didn't work for me. I used your EFI with an update from BIGsur. The startup is ok but the system is slow, the usb ports, the wifi does not work
My config is not the same , I have a Dell E7280 but i5-6300 (skylake) with a HD 520, 16go ram.
Is it possible to build a configuration with this base?
thanks