I faced this issue yesterday while upgrading to the latest firmware and I had no idea as to what to do. So here's what I did-
1. Firstly, I did a factory reset in the band and uninstalled notify app and mi fit app
2. Then I reinstalled and opened mi fit app again. I logged in from the same...
In my device I am still being shown the older version on playstore even after I updated it to the latest one.:rolleyes: My work is done anyways :whistle: