[fixed]Can't upload PX4 firmware image on Win7

Hello and Happy New Year!
I was built latest PX4 firmware in px4-stm32f4discovery_default configuration using Win7-32 bit, MSYS2, mingw-w64-i686, but can’t upload f/w image to CPU. The px_uploader.py script can’t recognize eval. board USB port, bootloader already in chip. The code successfully builds under Ubuntu 16 ( 2nd system on my book), but I wish do the same under Win.
Any ideas?
Thanks in advance.

Fixed now.