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They are of recent manufacture so the chances are high that they are upgraded already but the only way to know for 100% sure is with the S/N and contacting sig butt caontact B Buds Customer Service via LiveChat (available from 9AM to 9PM 7 days a week), the "Blue chat Now" button at the bottom right of the page, or phoning at (859) 368-0371 (available 9AM to 9PM EST Monday through Friday) and see if they can answer this for you

Please select a best answer and please note the 1st answers given are at the bottom of the thread you can select more than one answer To select more than on answer you have to open the question in multiple windows before selecting a answer the select a different answer on each open window/tab Thanks