MacBook Air 13-Inch Mid 2011
To open the Mac you need a PL4 Pentalobe screwdriver.
The ROM is a SOIC-8 chip (64Mbit)
To read or write ROM use Medusa with A4052 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 Molex-30.
LIO Flex: 821-1339
Matching Battery Port Tester: A4593