: Ensure your phone is connected to a stable Wi-Fi or mobile data network to download the update package. 2. Connecting to Wearfit Pro Download the App Wearfit Pro Google Play Store if you haven't already. Pair Your Device Open the app and ensure Bluetooth is enabled on your phone. (or "Equipment") tab at the bottom of the screen. Add Device and choose your HK8 Pro Max from the list to pair. 3. Executing the Firmware Update Find the Update Menu section of the app, scroll down to find Firmware Upgrade