Hi. I am a newbie to Macs. I've got a Macbook Air 2017, and it will not install any OS - it gets so far and then says "An error occurred preparing the software update". Long story short - I've tried erasing the HD, doing First Aid, using internet recovery, trying a USB stick, using different and...
Hi Friends,
I have 820-00923 need critical software update stuck Logic board issue. i.e 1.88V not present on R4400 & R4490. any one any idea may it is T1 issue or something else.