: Check the Harman Kardon Support Page or regional sites like Harman Kardon NZ for the latest available files.
Turn the receiver off using the main rear power switch. Wait 30 seconds. Turn it back on. harman kardon avr 151 software update
Even careful users encounter issues. Here are the most frequent problems with the Harman Kardon AVR 151 software update and their fixes. : Check the Harman Kardon Support Page or