The official firmware site is
####://www.pioneerelectronics.com/Pioneer/CDA/ServiceAndSupport/SelfHelpForIndFirmware/0,1465,60~6020~60201100,00.html

and I think that's the firmware we have.

This little gem of a site ####://www.pacificnet.net/~huyhoang/gs_ar/ has a version 1.65 not mentioned on the Pioneer site.

What's the issue with firmware?