To update the firmware on your Onkyo TX-SR393 Go to product viewer dialog for this item.
⚠️ turn off the power or remove the USB drive until finished. onkyo firmware update tx-sr393
Are you a proud owner of the Onkyo TX-SR393 home theater receiver? If so, you're likely eager to ensure that your device is running with the latest features, bug fixes, and performance enhancements. Onkyo regularly releases firmware updates for their products, and the TX-SR393 is no exception. In this article, we'll walk you through the process of updating the firmware on your Onkyo TX-SR393, discuss the benefits of doing so, and provide troubleshooting tips for common issues that may arise. To update the firmware on your Onkyo TX-SR393
Since the TX-SR393 lacks a built-in network connection, updates must be performed manually using a USB drive. Preparation : Download the latest firmware file from the Onkyo Support website and unzip it to the root folder of a USB storage device. HDMI Settings in the Hardware menu before starting. Connection : Insert the USB drive into the port on the rear of the receiver. Menu Navigation : Press the button on your remote. Go to 6. Miscellaneous Firmware Update Update via USB Completion If so, you're likely eager to ensure that
The latest stable firmware version for the Onkyo TX-SR393 is (released December 2025).
If the process stops, try a different USB drive (ensure it is not a USB hub) and verify the file was extracted to the root directory.