The latest Jaybird X3 firmware version is 1.4.0. This update has general bug fixes.
After the app has downloaded, double click the .exe file, and follow the prompts to install the app. If the download is blocked, you may need to temporarily disable Windows Defender or your anti-virus.
Go to your Windows Start menu and run Jaybird X3 Update Assistant.
Follow the instructions provided within the app to connect and update your buds.
If you are having any issues with the update process, please contact Jaybird Support.
Install the Jaybird app and connect your X4 buds
Android: Go to Menu → Support
iOS: Go to Headphones tab → Support
Your X3 firmware will display after the app build number.
The latest firmware is v1.4.0 If you have an earlier version download the Firmware Update Assistant and follow the instructions.
Download the Firmware Update Assistant and follow the instructions. The Update Assistant will tell you if your X3 already have the latest firmware.
Please note: The Firmware Update Assistant will have a software version. This is different to the headphone firmware version.
If your buds are unresponsive after a successful update, put them back on the charger (connected to a power source) for a few seconds and then remove again. This will get them out of the unresponsive DFU mode after the update.