Hk8 Pro Max Firmware Update «Cross-Platform»

After 5-10 minutes, the watch will vibrate and reboot. You will see the Hk8 Pro Max logo. Do not interact with it for another 2 minutes.

Tap "Download." A .dfu or .zip file will download to your phone’s local storage. This takes 1-3 minutes. Hk8 Pro Max Firmware Update

Tap "Check for updates." The app will ping the manufacturer’s server. If a new version is available, you will see a changelog (e.g., "Fixes ECG display error"). After 5-10 minutes, the watch will vibrate and reboot