Michael,
Can you check to make sure the SD Reader supports SDHC, some only work with the older SD cards? If you put your SD card in the Reader, you should be able to see the SD card in the "Computer" section as a removable disc or drive. If you are not seeing the card at all, it may be that you have an older SD only reader that does not support SDHC. HC is "High Capacity".
Additionally, once we get your card to be seen by your PC, we could potentially remote in and walk you through a streets update. We have that capability to drive your pc remotely, with your approval of course.
First step is make sure the SD card is being seen. Let us know what you find out here. You might try picking up a USB to SD Card Reader like below, I know it will work. Again, I'm sorry for the frustration you are having, but I believe we can get it all resolved for you.
https://ifly.adventurepilot.com/shop-...