I tried this - however, the admin account seems to be disabled before and after reset:
"This user had been disabled, please contact with administrators!"
Tried DIP 2,3 & 4 to get it back to factory settings.
Or could I have done anything wrong? Setting DIP 2 OR 3 OR 4, turn off chassis, insert MMB, turn on chassis, try to connect (IP works, login prompt appears on HTTP, Telnet provides the above message after admin/admin login attempt).