For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
you'll see efi asd and os asd for every model. it's up to you what you want to use - EFI ASD gives more information when it comes to failed sensors because you can see them all with their readings in the hardware profile.
then just copy it to partitions on a USB flash drive. hold down option while turning the computer on, boot up into ASD, and you're ready for testing.
I don't need EFI because there is no sensor problems. I tested off the EFI and it passed. The problem is with my macbook air it works great but when i update it it just goes crazy with the graphics card or it seems like it. Its just weird that its running good with 10.11.3. And 10.11.4 doesn't work.