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Apple's line of laptops for professional and power users. To date, the MacBook Pro line includes 13, 14, 15, 16, and 17-inch variants, with major revisions defined by Pre-unibody(Original), unibody, Retina display, Touch Bar, and SOC (system-on-a-chip) designs.

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Lost S/N after replacing the battery

I have a mid 2012 MacBook Air

I just swapped out the battery and updated to High Sierra and upon checking specs AFTER that I noticed serial # unavailable.

Which version of the Blank Board Serializer do I need to run?

Thanks so much for your help!

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The Blank Board burner won’t help you. Once the board is set with a S/N you can’t alter it. Just like an egg you can’t break the shell twice ;-}

Lets first reset NVRAM Reset NVRAM or PRAM on your Mac

You may need to re-install the OS as well for the firmware updater to fresh things.

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2 Comments:

but there IS NO SERIAL NUMBER - i'm not trying to alter it, i'm trying to ADD ONE :)

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Replacing the battery won't erase or alter the systems S/N.

Did you reset NVRAM?

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decker5 will be eternally grateful.
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