I find the bild.dm500 and after change..You only need to run "make_cdk_image <cdk directory> <directory for logfile>" to build an image. Nothing else is needed.
The picture "bild" is cdk/Patches/bild.dm500. So, you need to change that file.
but where is the satellites.xml, I want to change it, course I'm in Asia
thank for your attention