I need to turn off fax receive and put in it in manual mode

I think this is the the way to do it after looking here but the client say the bit 7 is already to 1 and he dont see the option in System monitor what are we doing wrong, it is bit 7 starting by the left or right ?, i dont have direct access to the canon

Service mode
Highlight SW27
Highlight Bit 7
Change bit 7 from 0 to 1

Power cycle the machine

System monitor
Received Job Status folder
Select Manual RX
press DONE

Thank you