====== DJI M100 and M600 Modification Overview ======

This guide explains how to modify DJI M100 and M600 DJI M100 and M600 flight controller parameters. This allows you to increase speed, remove limits and have control of your aircraft.

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

  - Download [[https://github.com/o-gs/dji-firmware-tools/raw/master/dji_xv4_fwcon.py|dji_xv4_fwcon.py]]
  - Download [[https://github.com/o-gs/dji-firmware-tools/raw/master/dji_flyc_param_ed.py|dji_flyc_param_ed.py]]
  - Download [[https://www.python.org/downloads|Python 3]]
  - Download your [[https://github.com/cs2000/DankDroneDownloader|Firmware from DankDownloader]]

Put the PY files and the firmware bin file in same folder, such as C:\M100

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

====== Detailed Steps ======

==== 1. Extract the flight controller Module ==== 

  * Put "dji_flyc_param_ed.py", "ddji_xv4_fwcon.py" and "M100_FW_V01.02.00.90.bin" into one folder such as C:\m100
  * Open a command prompt on Windows
 

    Start->Run->cmd

  * Navigate to this folder C:\m100

    cd\m100
    PRESS ENTER


  * Type into cmd  (Note: Replace "M100_FW_V01.02.00.90.bin" below with the fw version you are using.

    dji_xv4_fwcon.py -vv -x -p M100_FW_V01.02.00.90.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 M100_FW_V01.02.00.90.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 M100_FW_V01.02.00.90_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 familiar with!
  * Save the file

==== 3. Recompile the 306 flight controller module ==== 
  * Type into cmd 

   dji_flyc_param_ed.py -vv -u -m M100_FW_V01.02.00.90_m0306.bin

  * After this command runs, it will compile the parameters back into the M100_FW_V01.02.00.90_m0306.bin
 file. 

You can use either the M100_FW_V01.02.00.90_m0306.bin file or the M100_FW_V01.02.00.90_m0306.bin file to install on the aircraft.