Visit sometimes PowerShot SD1200 website we recommend. It will help you to use your Instant WPC54A hardware to the fullest Linksys extent.
There, you can download the latest Instant WPC54A updates of firm ware and PowerShot SD1200 drivers for your RELAYIOCARD device. You can also create Airport Networking restore points of your system in case of program failure. You would be able to retrieve initial state easily and try installing a Instant WPC54A driver one more time. If you have an outdated RELAYIOCARD unit, you won’t be able to find the matching Instant WPC54A driver thereto.