Things You'll Need
Instructions
Navigate to the R4 website download page (see Resources).
Find your R4 card on the download page and click on the download link next to it for the latest updates. Save the file to your downloads folder.
Right-click on the downloaded file and select "Extract All." This will create a new folder containing all the information necessary to update your R4 card.
Insert the R4 microSD card into the USB card reader and insert the USB reader into a USB port on your computer. Open the R4 folder.
Drag the downloaded files into the R4 folder. Select "Replace All" and wait for them to be transferred. The R4 should now function correctly.