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Firmware Upgrade Instructions To update your OontZ Angle 3 ULTRA from your Windows PC, you will first need to check the serial number on your OontZ Angle 3 ULTRA to determine which update to download and install on your Windows PC.
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Step 8 : When the progress bar shows 'Successful' your update is complete. Step 9 : - Unplug the Micro USB cable from your speaker. - If you have a second OontZ Angle 3 ULTRA, you will need to update it as well by following Step 6 on your second speaker.
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