I am having the exact same issue! I hadn’t used my P4 since last summer. When I first started using it I was getting messages to update the firmware and software. But I delayed doing that as I was out in the field at the time. Everything worked great on the drone. I flew it around quite a bit and had no problems whatsoever A few weeks later I went out and this time decided to go ahead and accept the updates. After going through all of them I started having problems right away. Particularly, specifically with return to home. But I also had issues with changing direction, specifically going forward. It would reverse and go side to side just fine. But for some reason it would slow down going forward to a crawl. If I hit return to home it would go straight up until I eventually stopped it. then other times it would just come straight down until I stopped it. I turned off obstacle avoidance in other intelligent guidance functions but left vision control and GPS enabled. Made no difference with a exception of going forwards seem to be cured by turning off intelligent controls with those two exceptions. But the return to home feature still does not work. I have to manually guide it back to me and bring it down for a landing. I’m not happy about this since It reduces my ability to have faith in the software. Plus I want to know the drone will return to me if something goes on where it needs to return home. Clearly this occurred after I updated the firmware. I have exhausted everything I can think of in terms of calibration performing both calibration on the drone itself and on the remote control. Any answers out there?
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