I think the image names of the graphics Q drops are some sort of encryption key, and once we string them together (or perhaps backward for a mirror), we'll be able to unlock 40,000ft info.
Not a techfag, so I have no idea how to go about doing it, but a lot of the images Q dropped are named in the following format: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXX
It's an 8, 4, 4, 4, 12 configuration. It's also possible they're hiding files in the images, and we use the image name to unlock the data that is hidden in the image. And then if we string it all together, we might get a map or something.
Some of the images in the drops are named normal words, and others are like this, so there has to be some sort of significance.
And Q literally has said "graphic is the key". I think it was meant to be taken literally.