This is an old revision of the document!
DUMLdore is a Windows app that can transfer firmware to/from a DJI product. Go to the GIT repository below to download and read detailed instructions
Compatible with: Aircraft: P4, P4 Pro, Mavic, Spark, I2 Remote Control: Mavic Goggles: DJI
DOWNLOAD THE ENTIRE ZIP FILE NOT JUST THE EXE
*note - Windows MUST detect the hardware. If DUMLdore does NOT detect the Mavic, close DUMLdore, run Assistant and let Assistant detect the Mavic. If Assistant DOES NOT detect the Mavic, DUMLdore will not work. Once Assistant detecs the Mavic CLOSE assistant before running DUMLdore
Start DUMLdore.exe
LOAD: Will load a firmware file to flash. Some error checking is done to make sure it is valid. It is not perfect and up to the user to make sure it is.
FLASH: Upload the firmware file to the device and begin the upgrade/downgrade.
BACKUP: Will make a flashable firmware backup of the currently connected device if applicable. It will save the dji_system.bin file into the current directory. It may take some time. Please be patient as the status may take a few moments to update on some of the files.
*If you are making a backup of the Mavic and the RC, rename or move the 1st backup file into a folder before running the backup on another device.
NOTE: Make sure you have atleast 50% battery remaining before you begin FIRMWARE FILES: https://github.com/MAVProxyUser/dji_system.bin
Thanks to hostile, the_lord, p0v and many others for the information :)
-jezzab (copied from his Git, with additions)