This is my first midibox project so i hope I am at least on my way somewhere right now. I am trying to make a controller for traktor that will connect via USB to laptop. I am trying to connect my core to a midisport 1by1. can I upload the mios or only use it after ive done that using the midisport? to do this i soldered the in from 1by1 to out of core, and out of 1by1 to in of core. I only soldered pins 2,4, and 5 because I read they are the only ones used in a midi connection. I soldered pin 2 to pin 2, pin 4 to pin 4, pin 5 to pin 5 for all connections. I tested the connections by touching inside the midi jacks (they are mounted on top of core still). First I tried stealing power from the USB jack and running it to J1 to use for power, then i tried using a wall wart instead and tried with both 7 and 9 volts with no luck. I just realized i can take out the voltage regulator and hook usb 5V+ up to J2 to avoid the power loss, is this correct? the lights on the 1by1 that indicate in and out are connected will not light up, but the usb connect light is on. mios studio shows no activity. so do you think one of these things in the list is a problem or is it something else? thank you very much for the help! I am super excited to keep making progress Lee :)