Hi Ron.
I’m a bit confused reading your message.
Do you have the firmware files and you just can’t connect to the camera, or are you trying to get hold of the files?
I’ve got copies of the Windows versions, if you have access to a windows pc.
The other thing to be aware of if you haven’t upgraded before is that you have to use the usb connector on the side, under the little metal cover held on by a screw.
Regards,
Julian.