Firmware Updates

TX-NR515 / TX-NR515AE / HT-R791

Notice of Firmware Update for TX-NR515 / TX-NR515AE / HT-R791

A firmware update for the TX-NR515 / TX-NR515AE / HT-R791 network A/V receiver is available through the unit’s network connection or USB input. The latest update includes the following content:

Latest Firmware Number (12 digits):1171-6110-0500 (TX-NR515 and HT-R791)

Latest Firmware Number (12 digits):1171-6110-0501 (TX-NR515AE)

As of 18 December 2014

Information Concerning Firmware Update for Onkyo Network Receivers

Onkyo has discovered there is a possibility of failure when updating receivers to this new firmware package via ethernet in certain network environments. For this reason, we are now only releasing a firmware file for installation via USB port / flash memory device.

Users should first check to see if their network receiver is running the firmware (1130-9106-0300 or 1130-9106-0301 released August 10, 2012) before installing this update via USB. If your network receiver is not running firmware version 1130-9106-0300 or 1130-9106-0301, please update your receiver to this version via the network facility before proceeding further.

If your receiver is running more newer firmware, there is no need to update via network facility. You can judge whether older or newer by the first three digits.

To check your firmware version, press the “Home” button on your remote control. Highlight “F/W Update” or select the “Firmware Update” icon and press enter. Your current firmware version will be displayed on the front panel of your A/V receiver as well as your TV screen.

Should you encounter any difficulties when performing this update, please contact us.

We appreciate your understanding and apologize for any inconvenience this issue may cause.


  • Adds support of Spotify Connect;
  • * Please download the Spotify Music app from the iTunes or Google Play store prior to installing this update.
  • * After installing this update, Spotify will no longer be able to be controlled through the receivers OSD menu.
  • * All control of the Spotify service will be done through the Spotify Music app.

    As of 3 December 2013

  • Corrects lock up failure when using Telstra T Box or MiCasaVerde Vera Lite controller on the same network;

As of 28 August 2013

  • Improves picture output of 4K up-scaling;

As of 11 April 2013

  • Improves the operation when HDMI Through is set to on;

As of 10 October 2012

  • Improves problem of HDMI video output no longer working;
  • Supports Onkyo Remote2 for iOS version: 1.30 or later―Adds support for high end models & audio streaming from iOS device;
  • Supports Onkyo Remote for Android version: 1.30 or later―Adds support for high end models; *it is also necessary to update the App;
  • Playing music files like Apple Lossless via network/USB becomes possible―Adds support of Home Media Function (Samba Server);
  • Additional Audio file format

    ■ Apple Lossless (.m4a/.mp4/.M4A/.MP4)

    Sampling rates of 8 kHz, 11.025 kHz, 12 kHz, 16 kHz, 22.05 kHz, 24 kHz, 32 kHz, 44.1 kHz, 48 kHz, 64 kHz, 88.2 kHz and 96 kHz are supported.Quantization bit: 16 bit, 24 bit

    ■ DSD (.dsf or .DSF)

    The sampling rate of 2.8224 MHz is supported.

    ■ Dolby True HD (.vr/.mlp/.VR/.MLP)

    Sampling rates of 48 kHz, 64 kHz, 88.2 kHz, 96 kHz, 176.4 kHz and 192 kHz are supported.

    ※Playing Dolby True HD files at rear USB port is not supported.

    ※Notice; Limitation of when using UWF-1

    1. Only 64 kHz and less sampling rate is supported;

    2. Dolby TrueHD and DSD is not supported;

    3. Using at rear USB port is not supported;

As of 10 August 2012

  • Improves operation of "Power on" of remote control;
  • Note:If you already have applied Remote APP ver1.30, the following restriction will be occur.

    ■Android / iOS

    In APP menu you can select Home Media Function, but does not operate in AV Receiver.

    ■iOS

    When playing music contents that saved in the iPod touch/iPhone at AV receiver via network, the sound stutter may occur.

As of 26 June 2012

  • Corrects problem of HDMI video output no longer working while the “Network Standby” setting is enabled;

As of 15 June 2012

  • Corrects unexpected instance where a portion of the internal memory may stop working during operation.*;
  • ** see below for further details;

  • Adds UBT-1 Support;

As of 8 June 2012

  • Corrects unexpected instance where a portion of the internal memory may stop working during operation*;
  • *All Setting will be cleared after this update. Initial set-up must be performed again including Audyssey calibration.

  • Improves update functionality;

As of 18 May 2012

  • Corrects problem of video output not working when after standby off for long period at the condition that “Network Standby” is enabled;
  • Improves update functionality;

As of 20 April 2012

  • Corrects problem of video output not working properly when connected to particular DVD/Blu-ray players through the AUX HDMI/MHL input (front HDMI input);

As of 30 March 2012

  • Supports Onkyo Remote App for Android (Version: 1.10 or later)*;
  • Supports Onkyo Remote 2 for iOS (Version: 1.05 or later)*;
  • Improves the operation of NET/USB-related functions;
  • Improves the operation of InstaPrevue functions.
  • *It is also necessary to update the App.

How to Check if Your Firmware Version is Up To Date

To Check if your firmware is up to date, go into Setup -> Hardware Setup -> Firmware Update and check the 12-digit number (xxxx-xxxx-xxxx). If any numbers differ from the latest version available, please update your unit.

Precautions for TX-NR515 / TX-NR515AE / HT-R791 Firmware Update

  • Please read the update instructions carefully before beginning.
  • The firmware update should take 30 to 40 minutes. Once the update begins, don't turn off the power supply to the A/V receiver until it is time to restart it.
  • Depending on the conditions of the network, a firmware update via a network may take more than one hour or even fail to finish. If the update is not completed within two hours, turn off the power supply by pushing the ON/STANDBY button and then try updating again from the beginning.
  • Updating the firmware and adjusting the settings will be done automatically, but may take some time to complete. Please follow the procedures as instructed when you update. Note that the update may fail, or cause problems for your A/V receiver, if you do any of the following:
  • Pull out the A/V receiver’s power cord;
  • Interrupt the power supply to the A/V receiver (e.g. if the breaker is tripped or if there is an electrical outage);
  • Insert or remove the LAN cable from a device in your network when updating over a network;
  • Insert or remove a USB memory device from the A/V receiver when updating via USB;
  • Operate components connected to the A/V receiver via HDMI, such as a TV or a recording device.

If your A/V receiver is damaged for any of the reasons above, an Onkyo service center will repair the unit for a fee.

How to Install Firmware Update for TX-NR515 / TX-NR515AE / HT-R791

Click below for instructions on how to install the update.

Click below to download the firmware update to your PC, for subsequent installation on your receiver via its USB port.