New Bose QC Ultra Firmware 4.0.20 BROKE something... 🤦🏻♂️
The latest firmware update 4.0.20 for the QC Ultra Earbuds replaces version 1.78. If you’re wondering about whether this update fixes the buzzing noise issue in the left earbud, read on.
The latest firmware update 4.0.20 for the QC Ultra Earbuds replaces version 1.78. If you’re wondering about whether this update fixes the buzzing noise issue in the left earbud, read on.