You can follow the following steps:u003cbru003e1) Click the Power key to start on the Vizio soundbar.u003cbru003eu003cbru003e2) Disconnect the soundbar's power cable while it's still on.u003cbru003eu003cbru003e3) Connect the USB disk holding the upgrade to the rear of your device's designated port.u003cbru003eu003cbru003e4) Reconnect the soundbar's power cable.u003cbru003eu003cbru003e5) The first two LEDs on the soundbar will brighten up, indicating that it has started update mode. u003cbru003eu003cbru003e6) This indicates that the upgrade is presently being worked on.u003cbru003eu003cbru003e7) You'll realize the software upgrade is finished whenever the LED indicators switch off. The USB port on the soundbar can now be removed.