Go to your phone settings and clear the cache for the Wearfit Pro app.
Updating to the resolves 90% of these issues. hk8 pro max firmware top
A typical version number might look like V1.2.3 or HK8_Pro_Max_V2.0.5 . The "top" versions are generally the highest numbers, but beware—some beta versions are unstable. We will list the verified stable releases below. Go to your phone settings and clear the