This is what i personal opinion for after update the latest Aircraft Firmware : V01.04.0602, Phantom 4 Pro+ Remote Controller Firmware : V 1.2.0.0 and DJI GO 4 App Android : V 4.1.0 that DJI released on 08-June-2017.

So far after tested this firmware for me i think is still not safe to flying cause still got a lot issues even the firmware and the Go apps too, as i did mentioned this is only my opinion so i am not sure how other pilot have same issues like what i highlighted or not.

So what i try to do is downgrade back to the previous version as what DJI Assistant 2 software mentioned that if you feel not happy with this latest firmware then you can load back the previous firmware version, But now seem the DJI has removed all the previous firmware on their server!

After i connect my aircraft to DJI Assistant 2 software and only showing  Latest Firmware V01.04.0602 and the rest previous version is now gone! So DJI Support, can you guys answer me this how to i downgrade my Phantom 4 Pro Plus back to previous firmware??

I hope DJI support can give me a proper answer for this as your did mentioned before we do this firmware update can roll back to the previous firmware.

You could try this again without the gimbal guard fitted. These have been known in the past to produce some strange affects on altitude (ultrasonic sensors getting false readings).

Aardvark Posted at 2017-6-30 01:45
You could try this again without the gimbal guard fitted. These have been known in the past to produce some strange affects on altitude (ultrasonic sensors getting false readings).

The previous firmware am also wearing this gimbal protection and it work well, the gimbal protector does not blocked the sensor.

Nelsonlee Posted at 2017-6-30 04:13
The previous firmware am also wearing this gimbal protection and it work well, the gimbal protector does not blocked the sensor.

That may be the case here, but DJI have decided they won't cover any damage where they are fitted, have a look at a previous post I made Here

Aardvark Posted at 2017-6-30 06:46
That may be the case here, but DJI have decided they won't cover any damage where they are fitted, have a look at a previous pot I made Here

My concern now is why their mentioned if this latest firmware you not happy then can roll back the previous version!
But now you see the DJI Assistant 2 after i connected and what i get!
Now can DJI Support answer my question?
Where's the previous firmware version now?

One of the things I noticed in the video was when you calibrated the aircraft,  you calibrated during second stage with the camera facing to the left and not down at the ground.
This might cause an issue in the overall calibration.

Tmygun Posted at 2017-6-30 09:08
One of the things I noticed in the video was when you calibrated the aircraft,  you calibrated during second stage with the camera facing to the left and not down at the ground.
This might cause an issue in the overall calibration.

I am follow what the DJI Go 4 displayed the calibration, If i did wrong then is not my fault and it's dji fault.

Nelsonlee Posted at 2017-6-30 09:33
I am follow what the DJI Go 4 displayed the calibration, If i did wrong then is not my fault and it's dji fault.

No............DJI displays a 2nd rotation of the aircraft with the nose/camera DOWN  not pointed  to the LEFT.

Good Luck with your issue.

Nelsonlee Posted at 2017-6-30 07:00
My concern now is why their mentioned if this latest firmware you not happy then can roll back the previous version!
But now you see the DJI Assistant 2 after i connected and what i get!
Now can DJI Support answer my question?

I have the same problem. Where is the firmware to roll back?

Tmygun Posted at 2017-6-30 09:08
One of the things I noticed in the video was when you calibrated the aircraft,  you calibrated during second stage with the camera facing to the left and not down at the ground.
This might cause an issue in the overall calibration.

Please see the Go 4 app displayed us the compass calibration step photo here, if i doing wrong so is not my fault! this is what dji support what suppose they need to do!

Nelsonlee Posted at 2017-6-30 07:00
My concern now is why their mentioned if this latest firmware you not happy then can roll back the previous version!
But now you see the DJI Assistant 2 after i connected and what i get!
Now can DJI Support answer my question?

DJI took all the firmware offline or from the there servers except for the current ones. someone posted a video on YT showing how to Mod the DJI AC's so is going to be interested on the next firmware update. specially if you have any issues with the update cant rollback....

You might have a serious problem where you took off from if concrete is rebar, you calibrated compass with remote in one hand AC in the other.

This whole thing looks like your whole preparation is so wrong including gimbal guard location and compass calibration procedure.

If you handle AC like this in same location, then you need look no further than yourself first to try to sort your problems.

Nelsonlee Posted at 2017-6-30 17:02
Please see the Go 4 app displayed us the compass calibration step photo here, if i doing wrong so is not my fault! this is what dji support what suppose they need to do!
[view_image]

Yes, unfortunately, DJI has made a mistake in their drawing since the nose of the drones and the lens should point down to the ground, which is actually in clear writing twice. Remember to put the controller and phone / tablet down to the ground at least 3 meters from you while performing the DJI compass dance. Afterwards, the compass must not be calibrated without the vessel's opening side extensively asking for a compass dance.

Regards Leif.

If this update does not bring anything good, for the DJI out.

If this update does not bring anything good, for the DJI out.

any idea how to downgrade if there is no other versions apart from V01.04.0602 on the dji assist software?