Problem with .img file

In days I received the new Navio2 autopilot. The problem is that the downloaded IMG file is not working properly.
The phenomenon is as follows: With Win32 program write out fine. Once ready, the OS sees as an unformatted disk.
And it can not be read. The Raspberry Pi does not start with him. Several times I went through also with the older version and always with this result.
Other IMG files are written, everything works (noobs …). Please help me to see what’s wrong. So I can not use the hardware. Otherwise, very nice work.

Did you unpack the archive after downloading? Please follow the guide step-by-step.

No, that was the problem. Thanks.