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Open WearFit Pro and ensure your watch is synced via Bluetooth. Find the Menu: Go to the Equipment/Device tab.

Calibrating blood oxygen and heart rate algorithms. How to Check Your Current Version Before hunting for an update, see what you’re running: Open the Settings menu on your watch. Scroll down to About . hk8 pro max firmware top

This is usually a Bluetooth interference issue. Turn off other Bluetooth devices nearby and try again. Open WearFit Pro and ensure your watch is

Look for the or Version . (Common versions often start with "1.0x" or "2.0x"). The Top Way to Update: The WearFit Pro App hk8 pro max firmware top

Ensure both your phone and watch are at least above 50% battery.