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
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
R107-0300-1120-0000)
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. P lease prepare a US B storage device such as a U S B
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.