Some of this is in the post above but here is the summary I posted on FB. This is after flying 4 packs thru it today:
“For those with a
P4P 2.0, DJI recently released firmware version V01.00.15.00. This is a PIREP on how this firmware update went for me and what it seems to have fixed. I did my update using DJI Go 4 and that process went flawlessly. I could have used Assistant 2 for Phantom 2.0 (make sure you download the correct version as the one for the
P4P won't work) but I did it with Go 4.
The update reset my multiple flight modes, EXP, braking sensitivity, and several obstacle avoidance system settings. The update forced an IMU calibration and don't be alarmed to see your IMU sensor status screen with huge bias numbers and red bar graphs for all 4 sensors. Others reported the same thing so this must be normal. Once you calibrate the IMU, you will likely find that your bias numbers on the 4 sensors are much lower than prior to the update. I did not have to do a compass calibration!
Now to what this update appears to have fixed. I call these Easter Eggs because the release notes do not cover all of these:
Gone are the issues with the compass sensor status page constantly warning of a backwards compass or extreme interference when there is none!
Gone are the issues with getting occasional compass redundancy switch messages.
Gone is the tendency for the the drone to slowly rotate in yaw while hovering. Variable in clockwise or counterclockwise depending on heading hovering at.
Gone is the occasional gimbal glitch where the gimbal jerks in its yaw axis.
Gone is the problem where the drone always braked at max braking power and totally ignored the braking action sensitivity setting. The drone now seems to obey that setting.
Much improved is the stability in hover. The drone now holds position like it is glued in space. Obviously in wind it will work as hard as required to hold its position but the position hold is now much improved. In smooth air it is rock solid steady.
It appears that DJI really did some significant updates to the compass/IMU firmware! Bottom line is that I highly recommend this update if you had any of those issues!”