"After trying several times to follow the guide linked by Chris Anderson without success, I decided to upload the firmware by following this link http://firmware.diydrones.com/. Guess what!? Problem solved, are three days that connects to the first…"

"I have tried many times to reload the firmware following the step by step instructions but the px4 never connects to the first shot. So I guess that has something wrong and I have to return it back.
 "

"those found on this linkhttps://code.google.com/p/arducopter/wiki/PX4board"

"I apologize for my English. I bought PX4FMU and PX4IO, the connect via usb but to connect them with mission planner or Ground control must be a whole day. does not want to connect to the first shot. The guides are really skimpy. I'm planning to…"