idk if this is an exploit but ill just post it
what i did was
1. turned off my ps3
2. unpluged the back power cable.
3. i pushed & hold the ejection button while im putting the power cable back in.
then the fans started up and the ps3 when into this like dead mode the eject button worked. but the ps3 didnt show eny thing on the screen.
to get out of dead mode i just had to unplug the cable and plug it back in normally
if you need a video proof just ask me and i guess ill make one by the way this was done on a ps3 160Gb Fw 3.66 cech-3001a
and if possible can this be used to make a 3.66 cfw,jfw or jb