This Happens, Unplug The Power Cord From The Wall Outlet, Wait At Least - Onkyo HT-S3910DAB Instruction Manual

Additional Function (Firmware Update)
This unit is equipped with a function to update the firmware via USB port when the firmware update is announced after purchase. This enables various functions to be
added and operations to be improved.
Depending on the manufacturing timing of the product, the firmware may be switched to the updated one. In such a case, new functions may be added from the start.
For how to confirm the latest firmware contents and the firmware version of your product, see the following section.
Update Information of the firmware
For the latest firmware contents and the firmware version, visit our company's website. If the firmware version of your product differs from the latest one, it is
recommended to update the firmware.
To confirm the firmware version of your product, press the
Operation of added new functions
If functions are added or changed from contents described in the Instruction Manual, see the following reference.
Supplementary Information ≫
Contents
≫
button on the remote controller, and refer to "6. Miscellaneous" - "Firmware Update" - "Version" (
❏ Firmware Update Procedure (
5
Connections Playback
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Front Panel≫ Rear Panel≫ Remote≫
Setup
≫ ≫
p83).
p6)