Opened debug menu on my K5-II (firmware v1.06) using the files:
00077680.536 and DEVELOP.MOD
The file names for the K3 should be:
00077760.XXX and DEVELOP.MOD
I would guess that the XXX is between 540 and 550, but this is purely speculation. If you are interested in repeating with the K3 you can create several files all at once and as long as the correct filename is among the names you chose it will open the debug menu.
Last edited by mrwood1602; 02-12-2014 at 08:59 PM.
Reason: added information about K3 filename