These are my dad’s earbuds. He said that a while ago he wasn’t able to listen with the Left earbud. He tough it was broke or something so I tried to see what’s going on. I did a little research and I found that it could be the firmware of the earbuds. Ok, I can give it a try. I downloaded the “Vie Fit” app. Did everything they said - fully charge, forget this device with the Bluetooth, turn it on, open the app, push the button 3 times and then nothing happens. The earbud just stays blinking blue and green, or blue and red (depending witch one I’m trying to update first). I thought I could finish this in like 10 minutes, almost an hour later and still nothing... hope someone can help me.