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Grimtheviking
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https://mavicpilots.com/threads/the-big-gnss-gps-issue-the-constructive-thread.121815/post-1406833

New information from my request to DJI (I'm french, so I have used a translator to convert to english)

Support3.NL (DJI Support)
6 Apr 2022, 19:34 UTC+8
Hello Emmanuel,

Thank you for contacting DJI EU support.

We have just received an internal note regarding your GNSS/GPS reception time issue on the Mavic 3.

Following the last update, we are finding that some users are still experiencing reception/timeout issues, especially in high latitude areas.
You can therefore ignore our previous email requesting flight history information from the drone and the application.

We have also detected that the presence or absence of an internet connection on the mobile device/remote control can also affect the reception time.
If this is connected to the internet, the reception will be faster.

The source of the problem has been located and a new update is planned, which will be issued in the next two months.

We apologize again for the problem encountered and we are doing everything necessary to restore the proper functioning as soon as possible.

Do not hesitate to contact us for any question. Thank you for your confidence.

Thank you for choosing DJI.
Marc
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2022-4-6
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StanMaster
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2022-4-6
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Mattft86
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Well lets hope they have found the problem and sort it and restore our faith....
2022-4-6
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Charles Adams
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At least there is consistency in the explanations.  This indicates that they do have a gameplan.  As to whether or not that gameplan is for benign purposes or more nefarious purposes, that's a separate conversation and I don't think it's productive to indulge in (just my opinion).
2022-4-6
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Sean-bumble-bee
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High latitude would be North of 45deg wouldn't it?
Is there a demarcation in the Southern Hemisphere or does the smae wording apply there too?
2022-4-6
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KokoFresha
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Thank you for sharing.
I will be happy if DJI fix it but ... 2 months ago they said they found the problem. It's hard for me to laugh at a sketch twice.

2022-4-6
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The Saint
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ok well, if you guys could please start posting your latitude then we can see for ourselves, right?
2022-4-6
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Charles Adams
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Varies typically between 38.3500° and 39.375°.  My wait times are typically between 90 - 120 seconds when online.  I don't have offline measures at this time.
2022-4-6
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Grimtheviking
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The Saint Posted at 4-6 10:28
ok well, if you guys could please start posting your latitude then we can see for ourselves, right?

I am 53N and I have to wait anywhere up to 9mins, and that's just the same online or not.
2022-4-6
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Mattft86
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Im Latitude 51n and Longitude -0
2022-4-6
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The Saint
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ok thanks but you need to say if you are having problems or not
anyone in alaska?
2022-4-6
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Mattft86
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The Saint Posted at 4-6 10:39
ok thanks but you need to say if you are having problems or not

Sorry yes i am just the day after the new update i got a lock in under 2min. As of the 3rd of this month it went to 4min then tried again and it was 7-8 min.
2022-4-6
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Visual Air
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I am here. The latest firmware didnt change to much for me. Still slow locking sats.

53° 32' 39.7968'' N
113° 29' 27.3444'' W
2022-4-6
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The Saint
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i would have thought high latitude to be 55 and over where there is some known gps degradation.
still doesn't explain why other dji drones are fine with "high latitude."

at least we might get a better fix (improvement).
2022-4-6
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Suren
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Just remember guys, while the update coming addresses the GPS issues, there is no more rollback after this from what I have seen.
2022-4-6
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Flormo2002
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Charles Adams Posted at 4-6 10:31
Varies typically between 38.3500° and 39.375°.  My wait times are typically between 90 - 120 seconds when online.  I don't have offline measures at this time.

38.47 roughly and lately been getting times in less than a minute. I'm the one with the self healing drone. Lol
2022-4-6
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Charles Adams
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Flormo2002 Posted at 4-6 11:16
38.47 roughly and lately been getting times in less than a minute. I'm the one with the self healing drone. Lol

FYI, I tried the approach that you tried on your Wolverine drone (you should name it that), and I am observing no differences.  I chilled.  No faster.  No slower, but no faster.
2022-4-6
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Flormo2002
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Charles Adams Posted at 4-6 12:05
FYI, I tried the approach that you tried on your Wolverine drone (you should name it that), and I am observing no differences.  I chilled.  No faster.  No slower, but no faster.

You chilled then performed a re-calibration of the IMU on a flat surface right away?
2022-4-6
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KokoFresha
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42.30 N degrees

Аverage time to record a home point - 2 minutes.
During the first 40 seconds the number of satellites remains 0 (is this the case with me only?)
The drone was produced in October 2021. I received it (on a waiting list) on December 23, which makes me doubt whether I received a drone returned by someone else.
2022-4-6
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Gookie88
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Roughly 51.4728° N, 3.2030° W

Home point 60 - 90secs
2022-4-6
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Grimtheviking
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KokoFresha Posted at 4-6 12:38
42.30 N degrees

Аverage time to record a home point - 2 minutes.

No, I am some times more than 1 min before I get any.
2022-4-6
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Charles Adams
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Flormo2002 Posted at 4-6 12:33
You chilled then performed a re-calibration of the IMU on a flat surface right away?

Yep.  It sat in fridge for a couple hours.  I set up my RC and phone BEFORE removing the drone.  I removed the drone and brought it over to the flat level table.  I turned on the drone and once there was drone/rc connect, I immediately went into IMU calibration.  Once calibration was done, I turned off and let it sit for a few hours before I tried.

I also tried in a "difficult" environment, it might actually be quicker in a very open space.  I tried from my deck, which is a covered deck next to the house.  So "challenging" environment that has never been fast.  It was not improved over past uses.  It COULD BE that I get improved results when in a very open environment, and I will try such as time permits.

Chillin...
2022-4-6
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Flormo2002
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Charles Adams Posted at 4-6 13:21
Yep.  It sat in fridge for a couple hours.  I set up my RC and phone BEFORE removing the drone.  I removed the drone and brought it over to the flat level table.  I turned on the drone and once there was drone/rc connect, I immediately went into IMU calibration.  Once calibration was done, I turned off and let it sit for a few hours before I tried.

I also tried in a "difficult" environment, it might actually be quicker in a very open space.  I tried from my deck, which is a covered deck next to the house.  So "challenging" environment that has never been fast.  It was not improved over past uses.  It COULD BE that I get improved results when in a very open environment, and I will try such as time permits.

and to think I was imagining that I was the one that saved the world from this horrid issue that some are obsessing over. Darn...I only saved myself.
2022-4-6
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StanMaster
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Monkey007
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But according to a reputable member of this forum, the Mavic3's GPS behavior is normal, so what is DJI going to be fixing with the firmware that's coming in two months???
2022-4-6
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Labroides
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Charles Adams Posted at 4-6 13:21
Yep.  It sat in fridge for a couple hours.  I set up my RC and phone BEFORE removing the drone.  I removed the drone and brought it over to the flat level table.  I turned on the drone and once there was drone/rc connect, I immediately went into IMU calibration.  Once calibration was done, I turned off and let it sit for a few hours before I tried.

I also tried in a "difficult" environment, it might actually be quicker in a very open space.  I tried from my deck, which is a covered deck next to the house.  So "challenging" environment that has never been fast.  It was not improved over past uses.  It COULD BE that I get improved results when in a very open environment, and I will try such as time permits.

Stop distracting and wasting forum space with this nonsense about putting your drone in the fridge.
There is nothing at all about cooling the drone that would make any difference to GPS acquisition times.
It was something that made a difference to IMU warm up times in very early Phantoms and that is completely unrelated to GPS.
2022-4-6
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NDI-Orlando
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The Saint Posted at 4-6 10:28
ok well, if you guys could please start posting your latitude then we can see for ourselves, right?

28 38 N.  Cold start home point lock consistently in the range of 70 to 90 seconds. Due to occluding structures at the take-off point, these times are attained by immediate launching to about 90 feet and hovering until home point lock. 0600 FW.
2022-4-6
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Labroides Posted at 4-6 15:38
Stop distracting and wasting forum space with this nonsense about putting your drone in the fridge.
There is nothing at all about cooling the drone that would make any difference to GPS acquisition times.
It was something that made a difference to IMU warm up times in very early Phantoms and that is completely unrelated to GPS.

Did you not send your M3 back for a refund?
2022-4-6
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Suren
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Charles Adams Posted at 4-6 13:21
Yep.  It sat in fridge for a couple hours.  I set up my RC and phone BEFORE removing the drone.  I removed the drone and brought it over to the flat level table.  I turned on the drone and once there was drone/rc connect, I immediately went into IMU calibration.  Once calibration was done, I turned off and let it sit for a few hours before I tried.

I also tried in a "difficult" environment, it might actually be quicker in a very open space.  I tried from my deck, which is a covered deck next to the house.  So "challenging" environment that has never been fast.  It was not improved over past uses.  It COULD BE that I get improved results when in a very open environment, and I will try such as time permits.

IMU and compass calibration has no bearing or effect on getting sat lock faster
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Labroides
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Visual Air Posted at 4-6 16:19
Did you not send your M3 back for a refund?

Yes I did ... and I've been watching with interest to see when/if DJI fix this lemon because I'd like to be able to fly that camera.
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Charles Adams
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Suren Posted at 4-6 16:31
IMU and compass calibration has no bearing or effect on getting sat lock faster

I know (or think I do), and I agree.  My test was based purely on curiosity, and a challenge to myself to not presume I know so much as to discount what seems absurd.  I did not expect it to succeed.  It did not succeed.  I expected to be flamed (you are not flaming me, thank you for that).  I learned more by being humble and inquisitive.
2022-4-6
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TonyPHX
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I am glad you did that tesst Charles.  If I do it, my family is going to have me committed.  They already think I spend too much time with drones.  But if I start taking up freezer space with one, well, the end will be near for me.
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Charles Adams
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Labroides Posted at 4-6 15:38
Stop distracting and wasting forum space with this nonsense about putting your drone in the fridge.
There is nothing at all about cooling the drone that would make any difference to GPS acquisition times.
It was something that made a difference to IMU warm up times in very early Phantoms and that is completely unrelated to GPS.

I respect you Labroides, yet that was uncalled for and unnecessary.  I enjoy trials and testing.  I am going to continue to test the logical, the strange, and the absurd.  I am going to continue reporting my observations and the results here.  You are free to critique my ridiculous efforts, and I will accept your critique with dignity.  Do not presume to tell me what to post or not post.  That is not your place.
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Labroides
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Charles Adams Posted at 4-6 16:58
I respect you Labroides, yet that was uncalled for and unnecessary.  I enjoy trials and testing.  I am going to continue to test the logical, the strange, and the absurd.  I am going to continue reporting my observations and the results here.  You are free to critique my ridiculous efforts, and I will accept your critique with dignity.  Do not presume to tell me what to post or not post.  That is not your place.

It's absolute medieval nonsense to think that putting the drone in the fridge would have any effect on GPS acquisition.
Continuing to discuss it like it might have some validity, only encourages less knowledgeable people to think it's a thing.
Just give up on it because it's not.
2022-4-6
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Labroides
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Charles Adams Posted at 4-6 16:58
I respect you Labroides, yet that was uncalled for and unnecessary.  I enjoy trials and testing.  I am going to continue to test the logical, the strange, and the absurd.  I am going to continue reporting my observations and the results here.  You are free to critique my ridiculous efforts, and I will accept your critique with dignity.  Do not presume to tell me what to post or not post.  That is not your place.

But if you insist on refrigerating the drone, you should know that it will only work if you do it at a full moon, rotate the drone fully 360° three times anti-clockwise and say the magic words.
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Labroides Posted at 4-6 16:38
Yes I did ... and I've been watching with interest to see when/if DJI fix this lemon because I'd like to be able to fly that camera.

Welcome to club of - when/if DJI fix the fruit.  
You can spend a lot of no-flight time waiting for DJI to respond, firmware-fix, trying-this, trying-that, sending data, and trying a refurbish replacement.

Do hope you get your MP3 back working or a NEW MP3 - ASAP.
2022-4-6
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Flormo2002
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Labroides Posted at 4-6 15:38
Stop distracting and wasting forum space with this nonsense about putting your drone in the fridge.
There is nothing at all about cooling the drone that would make any difference to GPS acquisition times.
It was something that made a difference to IMU warm up times in very early Phantoms and that is completely unrelated to GPS.

I was the one that started this Fridge thing so "cool" your beans Bucky. Case closed so don't you add to it by making snide comments.
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Flormo2002
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Labroides Posted at 4-6 17:11
It's absolute medieval nonsense to think that putting the drone in the fridge would have any effect on GPS acquisition.
Continuing to discuss it like it might have some validity, only encourages less knowledgeable people to think it's a thing.
Just give up on it because it's not.

So you've never done nonsensical things in your life high almighty? Some people are so easy to judge others as we all will be judged in the end and I won't be judged by you.  I'm the one you should have reserved your nasty comments to, not Charles.
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StanMaster
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Labroides
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Flormo2002 Posted at 4-6 17:33
So you've never done nonsensical things in your life high almighty? Some people are so easy to judge others as we all will be judged in the end and I won't be judged by you.  I'm the one you should have reserved your nasty comments to, not Charles.

I have cooled a Phantom to fix the slow IMU warm-up issue back in 2015 when that was a thing.
But I understood what it was about.
It's a huge leap to imagine that fixing an IMU issue (that hasn't been a problem for many years) would make any difference to GPS acquisition, a completely unrelated and independent system.

Take advice from someone who knows and understands what he's talking about and stop looking for virgins to sacrifice.
2022-4-6
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