Arduino code download

[93nav]

I am working on an Twoup that was never built because it was delivered with broken parts. I need to know how to connect to the printrboard (I think that is what is used), and then update it with the latest applicable firmware. I am new at all this, but the owner of the Twoup is not and is helping also.

We have already printed out replacement parts. I will get pics and id which ones we used from thingverse.

Thanks