Sony YY2948 - Initializing the Headset to Restore Factory Settings

Help Guide
Wireless Noise Canceling Stereo Headset
WF-1000XM4
Initializing the headset to restore factory settings
If the headset does not operate correctly even after resetting, initialize the headset.
Set the headset into the charging case.
Leave the lid of the charging case open after setting the headset.
1
Hold your fingers to the touch sensors on both the left and right units for about 10 seconds.
The indicator (red) of the charging case starts flashing.
2
Release your fingers within 5 seconds after the indicator starts flashing.
When the initializing is complete, the indicator (green) of the charging case flashes 4 times (
).
3
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