After uploading photos, they will be saved in your photo gallery.
If you want to upload an image from before, go to your desired product or product group.
Click the tool wheel next to the image you want to edit and from the drop down options, edit image.
When you edit image, you are able to upload new photos.
You can also go to your gallery to select a picture you uploaded previously.
Select gallery to choose an image.
Browse and select image to choose what you would like to use.
Your image is updated!