From the release notes on the DJI website. I got my P2Z last week and it already had the latest FW so I did not need to update.:-
Firmware
Remote Controller firmware update to V1.0.1.11
1. Optimized output of the X1 channel on the Remote Controller to improve the user experience.
Important Notes
1. For the users of PHANTOM 2 with H3-2D, must adhere to following steps to upgrade the Remote Controller firmware.
1) Use the PHANTOM RC Assistant software to upgrade the Remote Controller firmware to V1.0.1.11.
2) Calibrate the sticks and X1 channel of the Remote Controller using PHANTOM RC Assistant software.
3) Use the PHANTOM 2 Assistant software to upgrade the Gimbal IMU firmware to V1.8 on the Upgrade page.
4) After upgrade completed, calibrate the X1 channel of Main controller using PHANTOM 2 Assistant software,
then the PHANTOM 2 will work well with H3-2D.
2. For the users of PHANTOM 2 without H3-2D, conduct all the above steps except the third step to upgrade the Remote Controller firmware.
http://download.dji-innovations.com/dow ... tes_en.pdf