The link provided also allows you to download a set of instructions for updating the firmware. I don't think the procedure involves connecting the camera to the computer, so my best suggestion is to download, read and follow them.
Thank you for all the responses. I found a response in another forum to this question that explained how to download the firmware. I did it and I believe it took, but I have no idea what it does differently.
>>I found a response in another forum to this question >>that explained how to download the firmware. > >It's good that you've been successful, but I thought the posts >here also told you how to access the update instructions. >What did the "other forum" tell you that we didn't? >
The post told me to download the file to my computer, un-zip the file, put an SD card into my computer, download the file to the memory card, insert the card in my camera that had a fully charged battery, turn the camera on and then press the shutter button when it asks you to. This was not something that was intuitive.