Hi shai_b
Please unzip attached firmware.zip and press on board reset button when connecting board with USB cable. then drag firmware.bin to it.
Please note, the firename must be firmware.bin. don't change it to other name. don't use capital letter.

Power off and power on again. Make sure you have driver installed.
If the board is not broken, it should be recognized by PC.
You could try two more computer to verify this is a board issue or a PC issue.
Hope this helps,
Jun Zhang