Firmware-Upgrade Software

iii. Press USB button on the remote control to select USB mode.
iv. Wait for about half a minute. All LED indications would be on.
Firmware upgrade is started.
NOTE: Do not press any button, interrupt with the power supply or remove the USB
flash device during the upgrading process, otherwise the product may become defective.
v. After about half a minute, the LED indications flash twice. The product automatically
switches to COAX/OPTI/AUX mode. Firmware upgrade is completed.