Hello everyone!
I performed the update and this is awesome! But first... if you don't own a Zenmuse H3-3D or H4-3D you don't need this!
But if you own one of these gimbal then YOU HAVE TO UPGRADE because you will be able to finally adjust the tilt speed and end point of the gimbal!!!! Yes these basic functionalities that are arleady available for the Phantom 2 for many month!!!! And yes you also get the "FPV mode" which has nothing to do with FPV except that the Gimbal will behave like a FPV camera would be!
So first: Install the new 2.4 assistant software. Then update the firmware (4.04)
http://www.dji.com/product/naza-m-v2/download
Second: Install the 1.42 Gimbal assistant software. Then you need to upgrade the H3-3D or H4-3D GCU firmware (1.14) (I didn't update the IMU)
http://www.dji.com/product/zenmuse-h4-3d/download
Remarks:
The procedure for the H3-3D and the H4-3D is the SAME.
If you own a Phantom 1.1.1 and a Zenmuse H3-3D or H4-3D, you still need the external GCU because the one on the upgrade board or P2 board won't work for the new features (it doesn't matter if you have an original board, an upgrade board or P2 board)...
1) If you have a P2 board you have CAN-BUS available so you don't need the PMU V2.
2) If you have the upgrade board WITHOUT the CAN-BUS mod you need the PMU V2.
3) Finally if you have the original board you need the PMU V2.
Now I have super smooth tilt!!!!
If you have any questions...
Cheers