Phantom 3 and Inspire 1 Modification Overview

This guide explains how to modify Phantom 3 and Inspire 1 flight controller parameters running ANY firmware version.

NOTE: THIS IS FOR PRO USERS, YOU HAVE TO KNOW WHAT YOU ARE DOING! I'M NOT RESPONSIBLE FOR ANYTHING.

These instructions apply to any firmware version as of January 2018; the keys were found, we are good to go on all versions.

How to videos

The following how to video shows the process end to end. Watch this before doing any of this!

Toolset

Make sure to review this GitHub with more info: https://github.com/o-gs/dji-firmware-tools

Download dji_xv4_fwcon.py
Download dji_flyc_param_ed.py
Download Python 3
Download your Firmware of choice

Put the PY files and the firmware bin file in same folder, such as C:\P3

Install Python 3, reboot if required. Make sure to SET PATH for Python. If you don't know what this means, google it.

Detailed Usage instructions for the two Python Tools, dji_xv4_fwcon and dji_flyc_param_ed

Detailed Steps

1. Extract the flight controller Module

Put “dji_flyc_param_ed.py”, “ddji_xv4_fwcon.py” and “P3X_FW_V01.07.0060.bin” into one folder such as C:\p3
Open a command prompt on Windows

  Start->Run->cmd

Navigate to this folder C:\P3

  cd\p3
  PRESS ENTER

Type into cmd (Note: Replace “P3X_FW_V01.07.0060.bin” below with the fw version you are using.

  dji_xv4_fwcon.py -vv -x -p P3X_FW_V01.07.0060.bin
  PRESS ENTER

If you receive the following message:

ModuleNotFoundError: No module named 'Crypto'

That means there is a module missing in the Python 3.6.x installation.
If you do not get the error skip down to “The firmware will extract…” below.

To get the needed Module open a cmd prompt as administrator.

(win 10) Take the cursor to the bottom left corner and right-click to open the WinX menu.
Select “Command Prompt (Admin)” to open an elevated command prompt.
Type into cmd

  python -m pip install pycryptodome
  PRESS ENTER

Wait for the process to finish download and installing pycryptodome module
Now repeat this step
Type into cmd

  dji_xv4_fwcon.py -vv -x -p P3X_FW_V01.07.0060.bin
  PRESS ENTER

The firmware will extract and various modules will show in that folder different modules. The important module is P3X_FW_V01.07.0060_m0306.bin
Type into cmd

  dji_flyc_param_ed.py -vv -x -m P3X_FW_V01.07.0060_m0306.bin
  PRESS ENTER

This will extract the firmware and the flight controller firmware module.

2. Edit the flight controller Module

Open the flyc_param_infos file in Notepad, Notepad++ or your favorite text editor
Locate the parameter you want to find, change the value noted in the table below.

 Example
 g_config.advanced_function.height_limit_enabled_0
 Change the MinValue and MaxValue = 2

Be careful to only edit the parameters you are familliar with!
Save the file

3. Recompile the 306 flight controller module

Type into cmd

 dji_flyc_param_ed.py -vv -u -m P3X_FW_V01.07.0060_m0306.bin

After this command runs, it will compile the parameters back into the P3X_FW_V01.07.0060_m0306.bin file.
Now, you need to rename the file before loading on the aircraft. Rename it to “PMCAPPFw3.bin” for p3 and “INMCAPPFw1.bin” for inspire 1 (no quotes).

4. Install the modded file on your Phantom

To install the file on your aircraft, copy the PMCAPPFw3.bin or INMCAPPFw1.bin file to a formatted micro-SD card
Insert SD card into aircraft, power on. If the firmware update does not start, you can force it by holding the button on the side of the VPS.
The file will be flashed and the edited parameters will be applied.
The flashing progress takes about 5-10 minutes.
After flashing is complete the file on SD card “ PMCAPPFw3.bin ” will be automatically renamed to “ PMCAPPFw3_updated.bin”. Delete this fie, then fly your aircraft
NOTE: The changes work in the simulator as well, test there first!

Important Parameters

These are the important parameters you may want to modify to change the flight characteristics. These may change a tad from p3s to p3a to p3p to Inpsire. The proposed below are from p3a 1.7.

Important Parameter Descriptions

I removed the g_config from the prefix to make the table fit better :)

Parameter Name	Description
advanced_function.height_limit_enabled_0	Removes height limit
control.horiz_vel_atti_range_0	GPS Tilt angle makes faster
control.atti_range_0	ATTI Max tilt angle
control.atti_limit_0	ATTI tilt angle
control.vert_up_vel_0	Ascent Velocity Rate (Up)
control.vert_down_vel_0	Descent Velocity Rate (Down)
airport_limit_cfg.cfg_search_radius_0	NFZ search radius, lower is less enforcement
airport_limit_cfg.cfg_disable_airport_fly_limit_0	Disable NFZ
airport_limit_cfg.cfg_limit_data_0	NFZ map data value
airport_limit_cfg.cfg_enable[FLY_LIMIT_TYPE_SPECIAL]_0	NFZ Type 2 Removal (GeoZone)
flying_limit.auto_landing_enabled_0	No landing at 65k feet from HP
voltage.level_1_protect_type_0	Battery level 1 function (warn, led)
voltage.level_2_protect_type_0	Battery level 1 function (warn, led, land)
voltage2.level_1_voltage_0	Battery level 1 %
voltage2.level_1_function_0	Battery level 1 function (warn, land)
voltage2.level_2_voltage_0	Battery level 2 %
voltage2.level_2_function_0	Battery level 1 function (warn, land)
voltage2.user_set_smart_bat_0	Battery type (DJI vs non-DJI)
voltage2.level2_smart_battert_land_0	SmartRTH battery landing %
advanced_function.driver_license_limit_enable_0	DJI Driver License Pilot
advanced_function.viechle_license_limit_enable_0	DJI Driver License Aircraft

Parameter Values to Change

I removed the g_config from the prefix to make the table fit better :)

Last edit: digdat0 07/21/201. adding license param. use the tilt and vert up/down as guidelines.

Height Limit Removal

Parameter Name	Stock minValue	Stock MaxValue	Stock defaultValue	New MinValue	new Maxvalue	New defaultValue
advanced_function.height_limit_enabled_0	1	2	1	2	2	2
flying_limit.max_height_0	20	500	120	10000	10000	10000

GPS Mode Speed Change

Parameter Name	Stock minValue	Stock MaxValue	Stock defaultValue	New MinValue	new Maxvalue	New defaultValue
control.horiz_vel_atti_range_0	10	60	23	30	60	30

ATTI Mode Speed Change

Parameter Name	Stock minValue	Stock MaxValue	Stock defaultValue	New MinValue	new Maxvalue	New defaultValue
control.atti_limit_0	10	60	30	50	60	50
control.atti_range_0	10	60	30	50	60	50

Vertical Ascent/Descent

Parameter Name	Stock minValue	Stock MaxValue	Stock defaultValue	New MinValue	new Maxvalue	New defaultValue
control.vert_up_vel_0	1	10	5	10	12	10
control.vert_down_vel_0	1	10	3	8	10	8

NoFlyZone Removal

Parameter Name	Stock minValue	Stock MaxValue	Stock defaultValue	New MinValue	new Maxvalue	New defaultValue
airport_limit_cfg.cfg_disable_airport_fly_limit_0	0	255	0	1	1	1
airport_limit_cfg.cfg_limit_data_0	0	4294967295	20150910	20250910	20250910	20250910
airport_limit_cfg.cfg_search_radius_0	65535	50000	0	1	1	1
airport_limit_cfg.cfg_enable[FLY_LIMIT_TYPE_SPECIAL]_0	0	1	0	1	1	1

Disable distance limit landing

Parameter Name	Stock minValue	Stock MaxValue	Stock defaultValue	New MinValue	new Maxvalue	New defaultValue
flying_limit.auto_landing_enabled_0	0	1	0	1	1	1

Disable smart battery functions / auto landings at low battery and high altitude

Parameter Name	Stock minValue	Stock MaxValue	Stock defaultValue
voltage.level_1_protect_type_0	0	1	0
voltage.level_2_protect_type_0	0	2	2
voltage2.level_1_voltage_0	10	100	30
voltage2.level_1_function_0	0	10	0
voltage2.level_2_voltage_0	10	100	10
voltage2.level_2_function_0	0	10	1
voltage2.user_set_smart_bat_0	0	10	2
voltage2.level2_smart_battert_land_0	0	100	10

Disable DJI's driver license enforcement

Parameter Name	Stock minValue	Stock MaxValue	Stock defaultValue	New MinValue	new Maxvalue	New defaultValue
advanced_function.driver_license_limit_enable_0	1	1	1	2	2	2
advanced_function.viechle_license_limit_enable_0	1	1	1	2	2	2

These parameters are intended to be informational and as guidelines. You can change certain ones like speed +/- from what is posted above. Please fly safe and within the limits of the aircraft and yourself.

Finish

Once you are done editing, you can fly. I recommend compass calibration. You ca

Table of Contents