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ammoune78

macrumors member
Original poster
Oct 20, 2017
65
13
Hey guys!

I have a MacBook Air 7,2 that have serial number unavailable under about this Mac. I was using El Capitan well, until the last weak, I've seen that the serial number disappeared under about this Mac. I've tried upgrading the system to Catalina 10.15.2, but without success. Also, I've tried the called Blank Board Serializer all the three versions without success, I always end up with two LoadEFI Error: 0x000003 and 0x000006, the rebooting with C key is resulting with a black screen and then boots up to Catalina.

Is there any way to re-write the serial number back to the board or a tool to dump, write the serial to the ROM and flash back with the modified ROM?
Thank you!
 
Hey guys!

I have a MacBook Air 7,2 that have serial number unavailable under about this Mac. I was using El Capitan well, until the last weak, I've seen that the serial number disappeared under about this Mac. I've tried upgrading the system to Catalina 10.15.2, but without success. Also, I've tried the called Blank Board Serializer all the three versions without success, I always end up with two LoadEFI Error: 0x000003 and 0x000006, the rebooting with C key is resulting with a black screen and then boots up to Catalina.

Is there any way to re-write the serial number back to the board or a tool to dump, write the serial to the ROM and flash back with the modified ROM?
Thank you!

Use this AST_BBS_1_1.rar Download (1.77 MB) Make USB using balenaEtcher-1.5.102 boot insto BBS and it works automatic
 
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