this is the store screensaver (out of box)
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the screensaver after changing to affiliate=kobo
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powered off store screen
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powering on, the small triangle was changed to a "kobo in". but that made everything all letters, so it may not have been an actual picture. (didnt' manage to take a pic of it, but will if it's required)
so, there should be at least 2 pictures hidden somewhere (the screensaver and the powered off screen)