Someone posted earlier about upgrading this receiver with AVR 630 firmware. According to that post they claimed that this should make the 430 to encode HDCD - this was possible as they have identical chipset. Can somenone confirm if this is true or not?
Other thing is that the 630 can switch the inputs to outputs on the front panel. Shouldn't that "disturb" the functionality of the 430? And the upgrade files are identical in size but one file - though same size but different version name and creation time.