Hi,
I was a little in hurry. I copied on the CF the following files
fw.bin, NK.bin, boot.cfg and pkfclient.exe
I launched again my STB...and I discover that it boots from network (bootp I suppose). First all files are erased, then
Boot.prf, boot.arc.bootlog.txt and boopref.bak are created
I connect it to network and after a long time NK.bin and application (TV2Client.exe) are loaded. I don't test if it's running as the box is not connected to TV. But my purpose it is not to used this system.
So I suppose bootp parameters are written in bios. Anyone knows how to access to bios parameters. Up to now my only connexion is through serial port.
Best regards.