dronist
![](https://forum44.djicdn.com/data/attachment/common/9b/common_15_usergroup_icon.png) First Officer
United States
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Flybee Posted at 2017-5-10 08:40
Hope you have time for a question, I have never upgraded before due to a lot of reasons i'm using "your" method at the moment with Iphone 6S and so forth. Do you do a IMU calibration afterwards or?
Flybee,
Of course,...I only did IMU and Compass calibration when I received the new MAVIC.I did that with every drone I reveived. I DO NOT update. I do COLD IMU, put unit outside if it is cold or in the frigde in warm weather for about 1/2 hour. Then I do compass calibration, then Auto Gimball calibration and LAST thing I do is do the UPDATE. This is for new unit.
Existing unit, I only do update UNLESS the app ask me to do the IMU or Compass calibration. Important is to have 4G strong connection or FAST WIFI.
I always check, Compass and IMU and batteries reading before each flight, this is me.
Hope this help! ![](//forum44.djicdn.com/static/image/smiley/emoji/79_2x.gif)
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