***Please let us know which Firmware you need*****. LEAVE MESSAGE WHEN PURCHASING. Authentic - Refurbished - Replacement Part - NOT A COMPLETE
SET - You will receive a single "LEFT SIDE" replacement item. One
original silicon ear tip will be included. Thoroughly tested and
guaranteed to operate as intended by the manufacturer.
NO RETURNS.
***The
replacement earbud has been updated to FIRMWARE 4.2.1 and will ONLY
sync with an earbud that has the same FIRMWARE. PLEASE LET US KNOW
IF YOU NEED ASSISTANCE BEFORE YOU PURCHASE OUR EARBUD.*****
*****”IF YOU NEED FIRMWARE 4.1.0 LET US KNOW AND WE WILL SEE IF WE HAVE ANY AVAILABLE.****”
Initialize the headset to restore factory settings.
Instructions may be found here: https://www.sony.com/electronics/support/articles/00278109#Initialize
Initializing video instructions can also be found on this page.