Thanks for the great pics, but I highly doubt the connector in the middle would be for an SD.
You would need 8 contacs, but you got quite a few more to choose from.
Even if TT would have been so nice to prepare those for an SD you still would need to find out which contact goes where - again without knowledge ofthe chip layout very hard.
But maybe your pics will help to find someone with mor eknowledge than myself.
You could try to find a datasheet for the big Samsung chip and try to figure out what goes where using a sensitive multimeter, just check for continuity from the solder pad to the corresponding contact on the chip.