Members-
       Today I upgraded with the new transmitter and the binding went well. While I was connected
with the computer I did the new software update to ver 3.12. Anytime I do an update I always do
an advanced IMU calibration. The green bar was moving as it usually does and stops about 3/4
way and hangs. I waited 30 min. and it just quit. Shut everything down including the computer
and rebooted. Connected everything up and received a message calibration needed. This time
everything went normal. Everything seems normal. I went to my normal takeoff point and started
up and all systems good. Did the compass dance and ended with 7 sats. When I took off- it
hovered at 10 ft. and did a hard bank to the right and flew uncontrollable to a tree 40 ft. away
at full speed and my sticks were centered.
        This Phantom is 6 months old and maybe 40 flights. I have never had a problem and
really trusted it.
        Was this error in IMU calibration a warning? Should I have reinstalled the update- if
this is possible?
         Thanks- Al

Did you also do a calibration of the control sticks?

Gerry1124 Posted at 2015-3-17 18:14
Did you also do a calibration of the control sticks?

Gerry- Yes I did- first with the rc software and again in the Phantom software.
  Thanks- Al

Ok- This is what I have done-
1- Purge computer of the DJI software
2- Installed fresh software
3- Opened up the Phantom to check for damage and connections
4- Hooked up the Phantom and went thru the whole process
(Calibrated everything)
5- New Props

Now to build up nerve enough to try again!!!
As you can see- this was my first major crash- I could not
believe the phantom could move that fast!!!

Does anybody have any other suggestions?

Could be something to do with the solar activity at the moment? Messed up the GPS maybe?  I know it's a coincidence with the upgrade but....

I would check the numbers on the IMU screen and see if they are within the recommended settings before flying again.  When I received my Phantom 2 I had several flights where the Phantom took off to the left side. It almost caused several crashes before I saw the Y number on the Gyro was out of the norm.  An advanced calibration worked for me.

oakspi Posted at 2015-3-18 04:43
I would check the numbers on the IMU screen and see if they are within the recommended settings befo ...

oakspi- 1st Cav myself- Know Nam well

    I did do the advanced calibration and all numbers were within range. I really think it
was a faulty download. I have never had the advanced calibration just hang.
   I just finished a flight and everything seems normal.  Just watching carefully!

It is great that you had a trouble-free flight today.  There was some solar issues happening today.  It was suggested that it would not be a good day to fly.

oakspi Posted at 2015-3-18 09:24
It is great that you had a trouble-free flight today.  There was some solar issues happening today.  ...

The way some of these posters were carrying on about the solar activity,  I was expecting the Earth to short out and fly away and out into deep space.

Gerry, Did you fly today?  I think you said you were ready to test some new attachments.

oakspi Posted at 2015-3-18 09:30
Gerry, Did you fly today?  I think you said you were ready to test some new attachments.

I was up yesterday and finally got the flytrex figured out.  Rainy today so I was grounded.