Today I got my new Mi Band 6 to replace the Mi Band 4 ive been using for a while (skipped the Band 5 version)
All went well , paired ok but the Mi Fit app then immediately detected a update to resources.
This starts then almost immediately fails. "Cant update"
Band then appears disconnected from phone.
This loops every time you open the MiFit app
I have Notify And Fitness app also so i tried to update firmware of the band using that directly , that also failed.
No real info on the web for Mi Band 6 failed to update issues.
In the end in desperation i tried my daughters Iphone SE (2020) to pair and update and it worked fine updating resources and then the firmare!
unpaired and paired up to the S21 again, now no update needed so all ok.
Time will tell if it now works next time i need an update using my S21