Show me your boots!

[Mickey]

Here is the post explaining it:

Custom Startup Image

When the S2400 starts, it looks for a file called start.bmp in the root of the SD card. If found, it will display that image for a few seconds. Only BMP files are supported, not JPG, PNG, GIF, etc. Images can be any size, however only the upper left 128 by 64 pixels will be displayed. Color images will be converted to monochrome and dithered. Images with high contrast display the best. Text and line art works great. For photos, consider removing extraneous background details. There are plenty …