I flashed my DM500 with the Dm500pli-Jade-dm500-old-framebuffer-20090627-6494.img and when i connect it to the TV and it boot up i can get it to stop from rolling. I have tried the right arrow but nothing.
Its possible the wrong TV format is selected Pal Secam etc in the AV settings you may having trouble trying to view the setting to try change them though so it may be best to try another image.