MacBook Air Early 2015
To open the Mac you need a PL4 Pentalobe screwdriver.
The motherboard number is on the top edge of the motherboard, right above the CPU.
To read or write ROM use Medusa with A4060 or A4160 EasyFlash adapter. EasyFlash plugs in with the arrow to the back of the Mac.
The ROM in on the bottom (hard to reach) side of the motherboard.
The SPI connector is a Hirose-12.
LIO Flex: 821-1721
Matching LIO board is 820-3453
Battery: A1495 or (A1406 A1370)
Matching Battery Port Tester: A4593
Motherboard runs just fine without battery connected but at half (!) speed.