Hi, I bought it used of marketplace and it’s clearly a Dev unit, that’s why doesn’t accept any macOS I tried.
I contacted apple but was no help because the serial number cannot be found since it’s not a retail unit
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Thanks for the reply.
I don’t really think they could / would help with this, that’s why was hoping someone here could help me out to figure how can I reinstall macOS on this unit.
Cheers