@mamera-hfmd: We do not have a good idea of your problem, so if you can write any English at all, please ask again.
However, one of the CD Freaks international staff has kindly made a rough translation:
[i]"Need HELP... can you help me? It happened that, using the Panasonic service disk to convert my ht70 to multizone, during the reset process it showed a number but unfortunately I didn't write it down.
... [then something about the display ?going blank and ?asking for a disc] ...
Now it does not allow to extract the discs... what can I do... thanks a lot... hugo fernando".
[/i]To me, it sounds like the multiregion hacking didn't fully complete after a reset; and now he can't remove the engineering disc (or other discs). If anyone has an idea of the problem, please respond :).