i don't use home lock or course lock. the first time i tried it neither worked at all. the second time i tried it, weeks and an upgrade later, they did. I haven't tried them since. RTH was activated by the loss of signal not me hitting a switch. 15 seconds later it turned around then started heading out again (away from me). flipping the s1 down to RTH then back up (to take control) was what put it back on its RTH path. i still wasn't able to regain control for a bit. had to wait till it got closer. i suspect that every house i flew over has wifi and that may be why i can control an "away facing" plus over 1000 feet further than i can a plus facing me.