Okay, that is a KK type board. Go to the page http://www.hobbyking.com/hobbyking/s...dProduct=21977
and click on the "files" tab .... just below where it says "add to cart". There is a bunch of information there. I'm not familiar with this board but it appears that you need a USBasp programmer (also available from hobbyking). There are a couple of programs in the files tab also, KKmulticopter flash tool etc and instructions.
Multirotors are a learning curve, to build, and fly. Read, read, and read some more ... ask questions. Search on this forum under hobbyking v3.0 control board, or in the KK threads and it will all become clear. (as a note ... I am not 100% sure that this board will actually fly a Y6 ... maybe someone can clarify that ??)