The upgrading instructions are as following:
- a. Please find attached upgrading software, download and copy it to the first category of your USB flash drive (please make sure the USB flash drive is FAT32 format and not over 32GB),
- b. Turn on the soundbar and insert the USB stick into the USB port of soundbar,
- c. Wait for a few seconds until hearing the sound of "bang" , waiting for 10s, then the soundbar will automatically shut down, which means the soundbar has successfully upgraded，
- d. Pull out the USB stick first and then reboot the soundbar, long press the "LED OFF" button to check if the version is updated to "U017".
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