[1.1.4 (1.1.2)][Problem] can't change BG-Image after iLiberty+ 1.5

Hello

a couple of days ago, i finally upgraded to 1.1.4 using iLiberty+ 1.5
had to do it twice ... after 1st time, no WIFI, no phone ... did it again, this time with option "Unlock with 3.9 FB"
=> well, now everything worked ... just was i little bit suprised by the very special BackGroundImage (on slide to unlock screen) ...
... a somehow weird painting ... looks a little bit like a section of a medieval painting of hell ...
:D

my Problem:
although the "painting" is not bad, i want to change it,
but cannot do that.
Neither with "normal" preferences nor with SummerBoard.

Somebody could tell me the trick, please?

Thanks in advance,
greez,
./_iD

P.S. / edit:
i forgot to mention ... some of the SummerBoard-Themes doesn't seem to work (while some do) ... but this is another problem, i guess


P.P.S.
and: sometimes, the contacts-Icon disappears from SB-Dock (made it visible with an "app" called "Contacts | HomeScreen" ... which was written for 1.1.2 according to its "info-section" ... couldn't find a newer solution, yet ... well, was not looking very hard ...)

Don't know what picture you're talking about with my recent iLiberty+ experience dating back to 1.2.78, but I guess you can SSH into your phone and change it manually or just set proper permissions and it might get changed right from the phone..., the regular way. Have you tried any of that? And yeah, post the picture :)

P.S. Painting of hell you say?? Well, any chance the unlock detected your nickname and downloaded a picture to match? ;)

Thanks.

Unfortunately i forgot, where the BG-Img is stored by default ...
... i dunno where to change some permissions ..., e.g.

Beside that you dont't know the theme of the picture, you know what picture i am talking about? (my phone has german settings, and i may make lots of translation-errors here ...)