Harman Kardon Avr 151 Software Update Page

Sometimes, a Harman Kardon AVR 151 software update won’t fix your issue. Here is what to do instead:

About 60% of users report improvement. 40% see no change or encounter update difficulties.

Ensuring consistent output levels regardless of the digital source. Improved HDMI Connectivity:

: No software update can upgrade the HDMI ports to version 2.2; they are hardware-locked at

: All AVR 151 models (including 151S and 171S) are locked to . This means they cannot be updated to

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