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I am trying to update my MacbookAirRetina but I am having difficulties.. I have tried to updated but the Macbook air has not update How/ do I get around this problem
MacBook Air 13″, macOS 10.15
Not sure why or where you're trying to enter your serial number but…
Not sure why or where you're trying to enter your serial number but…
I have tried 3 times to upgrade but each time I was unsuccessful so I was checking compatibility and it did not like my serial number.
What will be the problem if we do not upgrade. I will try again. I will read the instructions again.
I have entered my serial number but it is not recgonised
