HI There - I have a Linkstation LS-QV4.0TL/R5 and also have a password problem.
A few days ago it became unresponsive so I attempted to poer it off and on.
When it came back up in NasNavi it was in EM mode. After checking the forums it seemed that I should update the firmware.
I have flashed the firmware to 1.56 which seemed sucessful until it asked for a password at the end of the update.
All password attempts failed.
I can now see that I have data on my NAS but I cannot map to it.
I have attempted to reset the password by holding in Function for 10 seconds then power untill function flashes then release and then function for 1 second.
it still fails to default back to admn password.
Any more suggestions?