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RTH Changed Automatically

GPS spoofing can happen and homepoint changed beyond your control but it seems @Meta4 has ruled this out
Anyone using a spoofer of some kind would have to be close enough to you that you would meet them lol.
I have built and tested a few "spoofers" the best range I ever got with one was about 150'.
 
Here is an example. All logs are the same, a second Home Point Updated (Code;123200) at 6.0 seconds. Is this normal?
That's completely normal and similar is seen in just about everyone's flights.
It's a very minor update of the homepoint that results in a change of only 1 or 2 feet from the original tentative homepoint that was recorded.
because you said it was due to "a manual change to the homepoint which was done through the app"
No .. that's something that happens automatically and it's just a minor refining of the stored homepoint.
That's completely different from manually resetting the homepoint to a completely different location.
 
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Smart move.....before you unbox it, read the user manual completely, then read it again. If you are unsure of certain features, do internet searches for articles or videos. You cannot be over educated when it comes to your drone.
Having now read the mini 4k manual a couple of times I would say that it is terribly inadequate. It tells you where to change the home point but not how. It also gives very little information about how to use the map. I also had previously looked for training videos in DJI Fly and could find very little that was helpful. Youtube is helpful but the DJI info for beginners is lacking.
 
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So, if we assume the OP is truthful, and certain he did not manually update the Home Point (because he didn't know it was possible, and he couldn’t have completely randomly stumbled across it and triggered it because of how deeply it is buried in the menus, without now also recognizing the screenshot instructions for how to do so), but the data shows that the Home Point was updated manually, how do we reconcile these two conflicting "statements?"

Must the OP be mistaken, and his assertions be completely and irrefutably dismissed, or is there a remote possibility of a unique bug that he inadvertently tripped over, that somehow updated the Home Point in some other way, which was recorded as a manual Home Point update?

Regardless, it was still pilot error to not know how to cancel RTH to the latest Home Point before signal was lost, and fly it back manually.

In all my years of flying DJI drones (since 2015), I have never used RTH. It is a feature, but not a guarantee, especially if you don't fully understand exactly how it works, and how to cancel it, while the drone is still under signal control, and how to reset it, when you discover that it is set somewhere other than where you want it set.
 
Just want to thank everyone for their time and participation in this discussion. The reason I started the chat was to gain as much knowledge as possible from the drone community and better understand what happened on the final flight. I'll try to summarize...

1) First of all, DJI was excellent to deal with. Hats off to them for the time they spent helping me understand what happened and in the end replaced the drone at a discount. They were very eager to settle this case and would phone me every time I did not reply to an email within 24 hrs. Unusual?? Maybe I'm not used to that level of service in North America. I was prepared to walk away and told them that but they insisted that I get a new drone. Still being sceptical of their analysis I turned to mavicpilots....

2) The first thing I did was look for similar discussions. There were a couple but there were no conclusions to the RTH issue. I posted a filght log and a description of what happened from my perspective. Most people were sympathetic and seemed to understand what happened but had no real answers. Meta4 was insistant that pilot error was the cause and that I must have reset the home point in the DJI Fly app. Reminds me of the experts at Boeing insisting that pilot error caused a 737 max to crash into the ground. Yes it was unwise for me fly my drone with my limited knowledge but hey it's a beginner drone. I read the manual and watched the DJI Go training videos but saw nothing there that, in retrospect, would have been helpful.

3) I don't know why the home point changed and I'll probably never know but I know a lot more now than I did before that final flight and hope that's enough to keep me out of trouble when I fly again. That may be a while because we're in the deep freeze here (see I read the manual Operating Temp 0 - 40C )

Happy Flying everyone....

John
 
Meta4 was insistant that pilot error was the cause and that I must have reset the home point in the DJI Fly app.
That's because that is the ONLY way that the homepoint could have been changed the way it did.
Reminds me of the experts at Boeing insisting that pilot error caused a 737 max to crash into the ground.
Reminds me of the times, users are unwilling to accept responsibility for their errors.
3) I don't know why the home point changed and I'll probably never know
Correction .. you don't want to acknowledge the reason your homepoint changed.
There's no mystery to it.
It's there in the flight data as plain as can be.

If homepoints just jumped around the way you want to believe yours did, we'd have seen similar incidents before from some of the millions of DJI drones that are out there.
But in 10 years of analysing DJI flight data
It can't happen that way and doesn't happen that way.
 
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