tienes que editar esta linea:

Custom images can be loaded here to be placed anywhere on screen, usually as background
;Set this to an unused icon and use sysgfx (or other method) to replace it with your custom picture
;You can define multiple backgrounds 0-6 to switch automatically according to custom_mode
;Specify either hex code of internal image or folder and name of external image

[IMAGE_FOLDER]: /card/other/sleepmode

[CUSTOM00.ICON]: 0xE5B0;
[CUSTOM00.ICON]: skull0dr8.png
[CUSTOM01.ICON]: skull0dr8.png
[CUSTOM02.ICON]: skull0dr8.png
[CUSTOM03.ICON]: skull0dr8.png
[CUSTOM04.ICON]: skull0dr8.png
[CUSTOM05.ICON]: skull0dr8.png
[CUSTOM06.ICON]: skull0dr8.png

[CUSTOM_MODE]: 0x03; 0=static icon00, 1=sequence by time, 2=random by time, 3=sequence by Day of week(Sunday=icon00, Mon=icon01, etc)
[CUSTOM_TIME]: 0x10; Time period before background changes in minutes



la imagen skull0dr8.png debe ir en esta ruta /card/other/sleepmode...


espero te sirva..saludos..ponlo como te lo estoy dejando ..saludos