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Well-Known Member, 48
NOTE: Make sure you have at least 50% battery remaining before you begin
Turn on the Aircraft and allow it to fully start up
Plug in USB cable from the aircraft to the PC
LOAD: Will load a firmware file to flash.
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.
Upgrade / downgrade your craft and RC (Mavic, Spark, P4, P4 Pro and I2) with DUMLdore.
Download it here:
Bins can be found here:
You need to be on FW .700 or lower.
You can fix the NFZ issue very easy
Here is an user friendly way https://nolimitdronez.com/.
But doing to manually isn't that hard and its free.