Platinum fails to downgrade to 03.0700

[Dytter]

I try to insert sd card and downgrade from 04.300 to 03.700 firmware but it seems impossible, what is the correct way to do it sucsessfully?

 

[Kilrah]

Firmware is flashed with DJI Assistant, not an SD card.

 

[Dytter]

Yes but you need to install a sd card into the platinum to downgrade, but it doesent work for me, so i wonder what is the the way to do it

 

[slup]

If the Platinum uses the same fw as for the Pro ... it looks like DJI put in a fw anti rollback from V1.4.0100.

Your only chance is to try Dumldore & hope it will work ... you can download it here --> Releases · jezzab/DUMLdore

And here a clip:

 

[Dytter]

Yes i use dumldore, but even i flash 4 times it still says 04.300 and later the drone goes solid red light and is not able to connect to rc or usb, must turn on and off drone several times to make it connect again to reflash 04.300 so its usable again, i dont understand how this was done with sucsess on the platinum, the normal pro is easy.