First and most likely the issue
Are you lifting off slowly and easy?
If so DONT!
I put a note in below, on how to lift off ,you have to go full throttle, up to eye level ( 5-6' up ) the let off, wait a few moments to see if craft maintains a stable hover, with minimal drift, if so go have fun!
If not read below!
( if you try to lift off to easily, with just enough throttle, it will tip over every time! ) you just have to go for it!
If you feel there is another issue, follow my instructions below:
Have you downloaded the ( RC ASSISTANT, PC ASSISTANT, and WIN DRIVER? )
If not, do that now,
Go to DJI.com, go to SUPPORT, find PHANTOM 2 vision, you will be looking for DOWNLOADS, under here is the manual, and proper softwares!
Ok
FIRST:
Look at your remote ( Tx ) do you have a USB port!
( if no follow instructions below )
Remove 4 screws on back of Tx, lift apart at bottom, and slide back from antenna hole to separate halves, now locate the USB PORT on motherboard of Tx.
Ok
Plug cord from Tx to computer, then OPEN ( RC ASSISTANT )
Once running, TURN ON TX, now calibrate ALL sticks, toggles, and dial wheel ( if you have dial wheel remote )?
Now turn off Tx, close RC ASSISTANT, unplug Tx.
Now
Open PC ASSISTANT,
Plug phantom into computer, turn on Tx, extender, and phantom!
Go to BASIC tab, find RC, now calibrate Tx here again ( all sticks, toggles, and dial wheel ) this calibrates Tx to bird.
Next
Go to ADVANCED tab, ( MAKE SURE CRAFT IS STABLE, and LEVEL ( all directions ) perform an ADVANCED IMU CALIBRATION!
Once finished with calibration, turn off phantom, extender, and Tx, unhook bird, close PC assistant!
Next:
Now go outside
Do a fresh COMPASS CALIBRATION.
1) spin phantom ( like a record 360 degrees, until solid yellow , turns to green
2) point camera at the ground, battery up, spin 360 degrees, until green turns to flashing yellow ( no GPS lock ) or flashing green ( GPS lock )
Lastly:
Most importantly:
When lifting off, don't try to be easy, it will flip, you have to go FULL THROTTLE, up to about eye level 5'-6' up then let off, should maintain a stable hover, with little drift! If at this point bird is erratic, drifting badly, or acting weird in ANY way, land immediately, and recalibrate compass! Weird or unusual behavior is a good sign that something might be wrong? Maybe something simple, maybe not? Just s good habit to be safe, and not sorry!
Hope this helps! Good luck!
J Dot