Crazflie2.0 doesnt work after Firmware Update OVA

[god3pain]

Hello,
I got a Problem with my Crazyflie2.0.
I recently bought a Crazyradio and did the Firmware Update via the Crazyflie-Client to the latest release (09.2016). That worked but after i pressed "Restart in Firmware Mode" the CF didnt start up correctly and now only the LED M2 is fully lit. The Power ON/OFF Button doesnt do anything. After that i tried to flash the Firmware manually via DFU with these commands:

Code: Select all

sudo dfu-util -d 0483:df11 -a 0 -s 0x08000000 -D cf2loader-1.0.bin

// This to flash the Bootloader

Code: Select all

sudo dfu-util -d 0483:df11 -a 0 -s 0x08004000 -D cf2-2016.09.bin 

// This to flash the Firmware

This didnt solve the problem. Maybe the nrf-Firware is destroyed? But i cant flash this with DFU right? The Voltage at Vcc is 0.5V when connected and 3V when in DFU-Mode. Maybe someone can help me with this.

Thanks,
god3pain

[whoenig]

It sounds like your NRF firmware was not flashed successfully. You can reflash it using the following steps:

1. Unplug the battery
2. Press the power button
3. Replug the battery (while keeping the power button pressed)
4. Keep the button pressed for ~3secs, until blue LED starts blinking
5. reflash

Doing 2+3 is tricky alone, you might want to ask a friend to help you out.

Currently, the flashing tool doesn't verify the uploaded code, which can cause such flashing issues. I have a few fixes to improve the flashing reliability as work-in-progress (https://github.com/USC-ACTLab/crazyflie-lib-python) and will work on a pull request this upcoming week.