Look at Step 14, the connectors seem to be different, at least at first sight. Why do you want to take that risk, by the way?
For model A1229, you have to disconnect the two additional connectors. Both are small with a black and grey cable, like the one in the top middle on the photo.
The first is located between the large display data cable and the fan connector, the second is located near the two connectors marked at the top left of the picture.