What have you tried so far?
I've tried rolling back the firmware versions through 1.0.5.66, 1.0.7.76, 1.0.9.26, 1.0.9.48, and 1.0.9.66. Not working on any firmware available for my band :(
As per title.
I have a Mi Band 4, mainly using Notify for Mi Band (Pro version, 10.4.2) on Android to sync with it, but have also experimented with the Mi Fit app too. In both, there's a setting to allow third party heart rate sharing with other devices, but I've yet to actually be able to pick...