Hi I am in india and I have a mid 2012 15 retina MBP with 2.6 ghz i7 8 gb ram and 1 gb graphics.
I had asked from a friend to get me a new logic board from US while he was travelling.
Sadly what he has got for me is the Late 2013 logic board with upgraded i7 2.8 ghx 16 gb ram and 2gb graphics...