Icecrypt S1600CHD Biss code entry

I have an old box and the BISS codes have got wiped . I cannot reenter them , because the secret memory which ought to be available with 1407 does not work in CA . Has anyone got a solution to this problem?
The box seems to be fine and detects a good signal from Intelsat 907 . I just need to be able to enter the BISS codes.