If you save your image as "Portable Bitmap", I think you get something which you can use to create the hex. As I recall this format was each pixel of the image represented as a textual 1 or 0. So you'd need to concatenate 8 of those together, then change it to a binary number and take the hex representation of that. OTA bitmap only is the image type.
-paul / ForumNokia
RE: How to get the image hex code