Firmware Update Onkyo TX-SR494 (5-29-2019)
We are pleased to offer this firmware update for the best possible performance of your Onkyo AV Receiver.
This update may be installed via USB only. USB is recommended for a faster, more reliable installation.
TX-SR494
(Current Version R107-0300-1120-0000)
The 5/29/2019 update will address the following:
1.Support Dolby Atmos Height Virtualizer.*
*For more detail please refer to "Listening Mode Effects" in the instruction manual and link below. http://www.onkyo.com/manual/txsr393/supple_393.pdf
Previous Update:
The 3/26/2019 update will address the following:
2.Add setting to switch ''Standard'' and ''Enhanced'' according to HDMI 4K signal format.
3.Minor bug fixes and improvements stability.
For detail about updated function, please refer to the link below. http://www.onkyo.com/manual/txsr393/supple_393.pdf
To check if your firmware is the latest version, go in to Setup -> Misc. -> Firmware Update and check the version number. If any of the numbers differ from the latest version available, please update your unit.
Update via USB storage
Note: Please remove the wired/wireless connection before updating through USB. Please prepare a USB storage device such as a USB
flash memory stick. You need at least 128 MB of available space to update the firmware. Please unpack the ZIP file onto an empty USB Stick that has been formatted with the FAT file system.
We hope you enjoy the improved functionality this update provides to your AV Receiver.
Precautions for the Firmware Update
Please read the update instructions carefully before beginning.
The firmware update should take up to 30 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.
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