Chosen Solution
I lost my left earbud and bought a replacement on ebay - how do I pair it with my right one and charger? Many thanks, L
https://helpguide.sony.net/mdr/wf1000xm3… This process apparently wipe the buds clean and introduce them to each other to be registered as a set.
For anyone else trying this you can get your headphones in pairing by mode by putting them in your ears and holding the touchbutton on both sides for seven seconds. NFC pairing didn’t work for me right after the reset, but it did start working with the new headphones after a while.
