How do I load the test sketch to APM? I have the latest update using AP 2.5 on it and the instructions are not specific on how to navigate to do this. I have checked the box under Hardware options. Also under the terminal window I have ran the test for the "optflow" and seems to be running fine giving me readings. But the only thing I have not done is load the sketch or check the focus since the instructions are not clear to me. Any feedback is appreciated.