Have read through the various "erratic" behavior posts and haven't seen one exactly like this, a few erratically flying around, but none where the Inspire would only fly one direction. Posting mostly as a testament to another frustrated Inspire owner... I've owned 4 Phantom 2's, ranging across the various upgrades, some with stock RC, some with upgraded, and my last (and still favorite) a tricked out one with LightBridge. So I'm a fairly experienced pilot and familiar with most things DJI. Was excited to get my hands on the Inspire and literally ordered it the first day. Like everyone, frustrated by the delays, got it right after New Years Day in the first batch of shipments... Well, haven't had a single good flight yet. On arrival I did the quick open and want to fly. Did all the basics, compass, IMU calibration, and saw the immediate first warning that a firmware upgrade was MANDATORY. Decided to skip that and at least get one flight done. First flight, the Inspire goes up (P-GPS, GPS locked, full battery, no warnings) and immediately begins acting erratically - the Roll/Pitch will not respond reliably - occasionally no matter what direction I try to steer it, it will only go forward, then change to left. Yes, imagine ALL FOUR directions on the stick sending the Inspire the same direction (and not where you want it to go). After 10 minutes of careful manual piloting, I got it down safely. Back in box for a while, while i use the Phantom/Lightbridge for the past 2 months for fun and shoots. This weekend, have a big event at the beach we want to film, so I get the Inspire back out and do the firmware upgrade... goes smoothly... RC and Inspire and battery now all on latest firmware. I do a compass, and gimbal calibration and a new IMU calibration... we go outside, set it down, and it won't take off, saying the sensor bias is too great, so I do another IMU calibration on the ground outside. Once that's done, motors start, we take off... and after going straight up, when releasing the throttle, Inspire immediately comes back down - FAST. I hurry and push throttle back up, release, Inspire comes down. It's not in failsafe or return to home, it's just coming down fast. I take it way up, try to fly around a bit, but no matter what i do, when releasing the throttle, it's coming down fast. I get it back over to me, let it come down, and I have to keep pushing up on throttle to slow it so it doesn't come down hard. We land, shut down... and reach for tech support. Live chat support gives the usual beginner questions - battery charged? compass calibrated? etc. They ask for the flight data to cloud, and then say "this is weird, we have to talk to R&D". At the same time, USA tech support picks up the phone, I describe the problem to them, they (like LiveChat) verify with me firmware is updated and on latest, then give simple advice to go fly in another location and try again. So we do that. New flight in middle of grassy park. Take off, Inspire hovers a bit, (so far so good we hope), at least it's not trying to come down fast now. I take it up, it darts off forward towards a hotel, and then won't do anything but go up and forward. So SAME PROBLEM as the first flight before the firmware upgrade. The inspire, no matter what direction we move stick 2, will only go forward (away from us) fast. Throttle up and down work, but now i'm over people and can't bring down. We can go up, and each nudge of stick 2, up/down/left/right - all 4 directions - only move it forward... and, yes, finally into the building, where it hits the side and goes careening down the side of the building into a pile. I guess with each nudge of stick in any of the 4 directions, i was hoping that one time it would start reacting again and go a new direction. But EVERY nudge only sent it away from me - the same one direction. So now it's broken and going back for repair. 3 flights, none of them successful. Not impressed with my Inspire. I had such high expectations. Anyone else experience anything like this - where it will only go one direction or respond this erratically?