anyone know how to restore the original backgrounds on the Appradio 1 for the main screen (where the clock is)

 

when i first bought it i tried to put in a custom background..it didn't work and its just a totally black background, even the halo effect for the clock had disappeared.

 

i did do the recent firmware update (V2.5 i think) a week or so ago and its made no difference at all

 

any help is appreciated