I opened a new thread regarding the IMU Error. Calibrate IMU I started getting since loading the latest official firmware.
Let's show DJI how many drones are being affected by this bug.

Thanks for your time!

I “had” the bug but have since downgraded the quad, controller and iOS app to 4.0.8 now all is well....

I had it, don't remember really when it started. it is just because the IMU is warming up, but it could take around 1 minutes to warm up not like before.

Sir, I have replied you in the previous post: https://forum.dji.com/thread-116365-1-1.html
It will be fixed soon.

DJI Susan Posted at 2017-10-16 01:05
Sir, I have replied you in the previous post: https://forum.dji.com/thread-116365-1-1.html
It will be fixed soon.

Thanks DJI Susan. I saw your previous post. I just wanted to see if I am the only one. If not, how many P4 users reading this forum are being affected?

Nothing to report here. ;-)
Because I only have a Phantom 3 Pro.
Ah, but I wish everyone here good luck, with their chosen drone models.



RedHotPoker

I cant start IMU calibration, when i hit start calibration button nothing start, someone with same problem ? How can resolve this ?

There's nothing to resolve.  You don't need to calibrate your IMU.  The Error message is a bug in the firmware.  As DJI Susan points out in her post above,  DJI knows about it and it will be fixed in the future.   Just ignore it for now.

I get the same error.  It goes away shortly after the 'Home Point' has been set....  It doesn't affect how my P4 flies.

jwt-873 Posted at 2017-10-19 06:19
There's nothing to resolve.  You don't need to calibrate your IMU.  The Error message is a bug in the firmware.  As DJI Susan points out in her post above,  DJI knows about it and it will be fixed in the future.   Just ignore it for now.

I get the same error.  It goes away shortly after the 'Home Point' has been set....  It doesn't affect how my P4 flies.

Hi jwt-873. You saw my video, the IMU Error went away after 1min 46 sec. What about yours? Cause that is not shortly.

I too am getting this error message but disappears after a minute when warmed up.

I get the error at start up. It goes away consistently. It is not what I consider to be a problem.

Each time I power on I get this error also p4 is very unstable by comparison to previous firmware. Will DJi fix this issue

I've been getting this error since upgrading on Aug 19th, 2017. I had a perfect P4 before this upgrade. Also had to do a vision sensor calibration right after the upgrade using the dji Assistant 2 on my computer. IMU takes a long time to warm up and have the error msg go away. I've also seen the aircraft switch to the 2nd IMU. It has flown ok but it sure makes me a little nervous. Wouldn't it be nice if dji sent emails to us letting us know of the bug and any possible precautions we should take or not. No communication for dji on issues like this.

Same here i haven't used my drone in 2 weeks and i turn it on yesterday and the IMU ERROR appear.

[img]https://forum11.djicdn.com/data/attachment/forum/[/img]

I am confirming that the IMU Error appears only on my iPAD Air, iOS 11.02.
No issues on Samsung Galaxy S7 Edge, Android 7.0, DJI GO 4 ver 4.1.10. Warming up 1min 10sec vs 1min 4sec on iOS.

Callatis Posted at 2017-10-19 07:16
Hi jwt-873. You saw my video, the IMU Error went away after 1min 46 sec. What about yours? Cause that is not shortly.

I'm a little late replying, but yes, my error always goes away after a minute or so.  I just treat it like a warm-up procedure.

i got that error on my P4. on the P4P i haven't gotten it

joeyB106 Posted at 2017-11-3 07:08
i got that error on my P4. on the P4P i haven't gotten it

iOS or Android?

joeyB106 Posted at 2017-11-3 07:08
i got that error on my P4. on the P4P i haven't gotten it

Try to calibrate it on a completely flat surface without any vibration right after turning the drone on (cold start) and check the results   

Callatis Posted at 2017-11-3 08:17
iOS or Android?

i was using an iPad

Vendex Posted at 2017-11-3 09:25
Try to calibrate it on a completely flat surface without any vibration right after turning the drone on (cold start) and check the results

i did that still no good. i still have the P4 but right now its just in a closet.

joeyB106 Posted at 2017-11-3 11:14
i was using an iPad

I didn't get the IMU Error on Android. So it's the app version.

joeyB106 Posted at 2017-11-3 11:14
i did that still no good. i still have the P4 but right now its just in a closet.

Did you finish you calibration successfully with 6-axis calibration?

Vendex Posted at 2017-11-4 06:16
Did you finish you calibration successfully with 6-axis calibration?

i haven't even tried honestly. maybe ill pull it out to see if it will work

Before buying my P4 I did a lot of research before putting out the sizable amount of money that I did.  On the one hand I couldn't help but notice all the problems others were having this forum with the FW upgrades.  But on the other hand I constantly heard that DJI drones are considered the best out there.

The same day I came home with my brand new P4 I got on the forums - yes, there is another one   - and asked if I should do the FW update.  More than one guru suggested that I stay with the version that it came with - for now anyway.  I only have one flight under my belt but I have to say that the drone worked flawlessly... save for the tree that welcomed me to the hobby.

Today I calibrated the IMU without any trouble.  Then I calibrated the gimbal, and again there were no glitches.  And so I guess my point is that for someone like me who has never flown a drone before, it just helps me out a lot not having to worry about error messages.  I can focus totally on just learning how to fly.

Oscar Myer Posted at 2018-4-8 15:19
Before buying my P4 I did a lot of research before putting out the sizable amount of money that I did.  On the one hand I couldn't help but notice all the problems others were having this forum with the FW upgrades.  But on the other hand I constantly heard that DJI drones are considered the best out there.

The same day I came home with my brand new P4 I got on the forums - yes, there is another one   - and asked if I should do the FW update.  More than one guru suggested that I stay with the version that it came with - for now anyway.  I only have one flight under my belt but I have to say that the drone worked flawlessly... save for the tree that welcomed me to the hobby.

Hi Oscar, what firmware version do you have and what mobile device do you use? I get the IMU error on the official firmware v.02.00.0106 and iOS. No issues on the Android.

Callatis Posted at 2018-4-8 16:11
Hi Oscar, what firmware version do you have and what mobile device do you use? I get the IMU error on the official firmware v.02.00.0106 and iOS. No issues on the Android.

Hi... My FW version is 4.2.8 and I'm running on iPhone 6+ with the latest update.

Callatis Posted at 2018-4-8 16:11
Hi Oscar, what firmware version do you have and what mobile device do you use? I get the IMU error on the official firmware v.02.00.0106 and iOS. No issues on the Android.

It is a little worrying, i have a similar experience, a replacement i got has an error doing it takes very long time (5-15 min, temp dep.) to get the picture transmitted in the app, it used to show up as the error shown below that used to disappear as picture turned up. On the latest release (P4P with +RC) the error has been suppressed even the symptoms is still there.
As it is my responsibility to flight safely it is very bad practice from DJI to suppress errors in order to hide their problems, what else might it have that is not shown!

Oscar Myer Posted at 2018-4-8 19:26
Hi... My FW version is 4.2.8 and I'm running on iPhone 6+ with the latest update.

What is the P4 firmware version? Anyway, the IMU Error on that v.02.00.0106 with an iOS was fixed on the next P4 fw release. When you see 45 people having the error, I guess we all went to the same bar the night before the firmware release
Fly high and safe!

Callatis Posted at 2018-4-9 03:54
What is the P4 firmware version? Anyway, the IMU Error on that v.02.00.0106 with an iOS was fixed on the next P4 fw release. When you see 45 people having the error, I guess we all went to the same bar the night before the firmware release
Fly high and safe!

I've had the error on a brand new unit right out of the box.  IMU error, reboot message, never went away.

downgraded firmware, updated again, same message.

Used dji assistant to calibrate, successful.  restart, same message.  Sent to dji, they said it was fine.  After more back and forth, they sent me a new p4, with a dead battery in it, so now they want to charge me for a new battery on the replacement they sent me.

They have some issues, which, having been in the IT industry for over 35 years, will come back to haunt them.  This is how startups take hold.  Just look at all the silicon valley giants that fell along the way when they didn't support their customers properly.

djiuser_6yZ7pNcdXMYy Posted at 2018-4-12 16:41
I've had the error on a brand new unit right out of the box.  IMU error, reboot message, never went away.

downgraded firmware, updated again, same message.

Yep i get that IMU message when starting up too...not to worried as it just warming up. (glitch in app)

djiuser_6yZ7pNcdXMYy Posted at 2018-4-12 16:41
I've had the error on a brand new unit right out of the box.  IMU error, reboot message, never went away.

downgraded firmware, updated again, same message.

"Used dji assistant to calibrate, successful.  restart, same message"
I think you might have done something wrong, only thing calibrated in Assistant would be the vision sensors afaik. i think it could be the IMU Warming up message you have had like PowerBand1 say above.

PowerBand1 Posted at 6-3 19:16
Yep i get that IMU message when starting up too...not to worried as it just warming up. (glitch in app)

Update your iOS and the app. I don't get the IMU anymore and the app is the only thing I updated.