official tools, stm32 usb hid debug tools: HIDDemo and STM32 Dfu, stsw-stm32080-V3.0.3.zip use to download program to stm32 mcu. stsw-stm32080-V3.0.0.zip converting hex to dfu file is ok, no bug HIDDemo is a program to debug stm32 usb hid, official tool! i tested them, works fine !

DfuSe_Demo_V3.0_Setup.exe
stsw-stm32084.zip

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