Can I modify the images in the iriver firmware? What about in Rockbox?
If you wish to modify the images of the iriver firmware, you should do so after having patched the firmware with the Rockbox bootloader. This is the only way to do it if you’re using the fwpatcher, and the most sensible way if you’re not. See the Rockbox Installation Instructions for more information on using fwpatcher. The Rockbox While Playing Screen (also known as the “WPS”) currently supports display of 1 bit (i.e., black and white) bitmap images. For more information on creating a WPS, see the CustomWPS and WpsGallery pages. Work is underway to enable the use of 2 bit (i.e., 4 color gray) bitmap images.