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jezzab / DUMLdore

Firmware Flashing Tool v3.20
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No usb connection after flashing firmware mavic pro #69

Closed dl2ffp closed 4 years ago

dl2ffp commented 4 years ago

DUMLdore has during flashing firmware aborted. After that, no usb connection was possible. The usb-port try to connect and in the same time disconnect. This is ongoing. I suspect destroyed the bootloader in the mavic pro. Any idea ?

jezzab commented 4 years ago

DUMLdore does not flash the aircraft. It uploads the firmware via ftp and then tells the aircraft that it can begin an upgrade. The aircraft then upgrades itself by first checking and reading the files that were uploaded via ftp are valid, correct and not corrupt. After the moment the upgrade begins the upgrade is autonomous. The aircraft can be unplugged from USB and will continue to upgrade itself, you just wont have any feedback on the process.

Without knowing what you flashed, what firmware you were on, what you were going to, where you got it etc. I cannot help you.

It sounds like its in a reboot loop which could be many things including a big jump in firmware version, custom scripts that were on the aircraft and so on

dl2ffp commented 4 years ago

After booting the aircraft is not blinking yellow, is red. I wanted firmware downgrade from 04.400 of 04.300.

dl2ffp commented 4 years ago

What can I do without usb? nothing or?

dl2ffp commented 4 years ago

I probably switched off the aircraft during the flash process

jezzab commented 4 years ago

Switching off the aircraft during the upgrade process could cause this and sounds more like it because going from 01.04.0400 to 01.04.0300 wont break a device. Even DJI Assistant can do this.

Im sorry but there is nothing I can suggest.