Emu XL-7 & MP-7 User's Group

Hi again,

i made a mess with an software libarian.. by mistake i uploaded empty 
sounds to the mp7, the libarian created empty sound slots called 
usr., i copied some presets there, so far it seems to be all right, 
the presets appears in the browser, but if i use this sounds in a 
pattern, ubicated in user rom lsb 0, only between sound 8 and 127 
next time i load the pattern it does not load the sound, it always 
loads the sound 0, at lsb 0, further if i try to acces this songs in 
the user part of the rom with a soft libarian, mp7 says device not 
installed.
how can i fix this? i was seeking some kind of reset to factory 
default, but i cant find it, i checked this user group, dont find 
nothing either...
any ideas?
Thanx
t.