I had to change my command line to be able to achieve a successful
upload as below :
C:\Users\Arnaud\Desktop\arduino-0021\hardware\tools\avr\bin>avrdude -c
stk500v1
-p m328p -P com6 -b 115200 -U flash:w:arduinooscillo.hex -C ..\etc
\avrdude.conf
I have an Arduino UNO. Don't know why I couldn't use c:
\arduinooscillo.hex as filename ...
After that I tried the exe file without success, the application hang.