HenningAA macrumors newbie Original poster Nov 6, 2019 #1 Problem solved. different machine Last edited: Nov 7, 2019
z2000 macrumors member Nov 7, 2019 #2 duplicate serial ? on the back cover? or read from OS? If read from OS - it may happened when Logic board getting replaced AND rewrite old serial to it. Reactions: HenningAA
duplicate serial ? on the back cover? or read from OS? If read from OS - it may happened when Logic board getting replaced AND rewrite old serial to it.