extended rom or full rom needed

[xacsx]

hy there,
where can i get an extended_rom-file from x7510 or a full rom with extrom?
if i make a extrom by myself, the update stops at 11%, so that i need an original extrom for costumizing.

----------------------------------------------------------------------------------------------------
edit: ok, i have tryed to integrate the extendedrom from x7500. it works and i can use this for costumizing.

edit 2: i have made a clean extended_rom, but can't costumize.

edit 3: ready. costumized extended_rom works perfect