Today ill be trying a corona for the first time...i jave the coolrunner + qsb upgrade + postfix adapter my questions are if i have to use the sd card rd/wr kit do i have to solder all points on the qsb upgrade or can i only do the necesary ones and whoch one are those....also can this qsb be wired instead of installed directly to the xbox board??? Any help will be apreciate it