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STM32F407VG wont boot after Flash

Question asked by huesser.noah on May 17, 2015
Latest reply on May 17, 2015 by Clive One
Hey guys!

I have an STM32F407VG on my board. I am able to bring it to the dfu mode.
Then I am able to flash it using DfuSe (http://www.st.com/web/en/catalog/tools/FM147/CL1794/SC961/SS1533/PF257916) or using the dfu-util for Linux. Both report to have successfully completed the download.
My whole command is: dfu-util -d 0x0483:0xdf11 -c 1 -i 0 -a0 -s 0x08000000 -D my.bin
with those: 
  -d --device vendor:product     Specify Vendor/Product ID of DFU device
  -p --path bus-port. ... .port     Specify path to DFU device
  -c --cfg config_nr          Specify the Configuration of DFU device
  -i --intf intf_nr          Specify the DFU Interface number
  -a --alt alt               Specify the Altsetting of the DFU Interface
Now when I powercycle my STM32, it doesn't seem to boot at all. RTC-Oscillator does not run, LEDs that should instantly blink do not blink. And most important (since all those could fail because of bad software): DfuSe does not recognize the STM32 in Application mode.
Does anyone have an idea what could be wrong and holding the STM32 back from normally booting?

Thanks and best regards,
Noah

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