How are you trying to update the driver, exactly? Are you using Windows' built-in driver updating function (Using properties) or are you trying to run a driver update installer from the manufacturer's website? If you didn't try updating manually through files from the manufacturer's website, you can get the files
Here. I uploaded the file myself so it's safe. Downloading from netgear's site required registration so I just got rid of that hassle for you. Alternatively, if you want to download it yourself from the manufacturer's website you can find it
Here.