Konica Minolta C6500 Firmware Update info. needed

[aaaoffice1]

Hello Experts on Konica Minolta C6500. I'm trying to install the FS-503, but after installing the RU-504 Power Supply and setting the SW3 #2 dipswitch on the Finisher to ON, Just realized that a firmware update is needed. could anyone help me in getting this firmware. thanks in advance.
email. aaaofficesolutions@yahoo.com