Well, I'm no lawyer but here's my two cents: you own the rights to the photo. you granted rights for your photo to be used for a particular purpose. and it has been used as intended. i would think you still own/control the rights of the photo for any OTHER uses. like if they update the manual again or something. but of course, if none of this is in writing, i suppose it would get trickier. there are all kinds of rights you can grant with an image; you granted them a specific right (right?) and they used it for that. above and beyond that, I would think they have to obtain your permission again. anyhow, thats my oversimplified version of it.