Instructions for updating the firmware of SVEN SB-2400DD ATTENTION!!! FIRMWARE IS FOR SOUNDBAR ONLY, DO NOT UPDATE FIRMWARE OF SUBWOOFER To update the firmware, you need to do the following: 1) Write the "ota.bin" firmware file to a USB flash drive (up to 4Gb). The USB flash drive must be formatted in FAT32, the USB flash drive must contain only the firmware file; 2) With the power off, insert the USB flash drive into the USB port of the soundbar; 3) Plug the power plug of the soundbar into a power outlet; 4) Wait until the inscription "OL" appears; 5) Turn off the power to the soundbar; 6) Remove the USB flash drive from the USB port of the soundbar; 7) Plug the power plug of the soundbar into a power outlet; 8) The update is complete.