I got a fez panda too and I have BL firmware 1.07 on the device - found using teraterm. I need to update it - yet when I follow this guide : https://www.ghielectronics.com/docs/53/firmware-update-usbizi#496 I do not have the file it suggests using. I have a different layout of folders and I am not sure which is the correct file to transfer to my Fez Panda II device.