https://www.apkmirror.com/apk/beijing-xiaomi-mobile-software-co-ltd/mi-wear-%e5%b0%8f%e7%b1%b3%e7%a9%bf%e6%88%b4/mi-wear-%e5%b0%8f%e7%b1%b3%e7%a9%bf%e6%88%b4-1-1-90-release/
Just downloaded the Mi Fitness (Xiaomi Wear) 1.1.90 APK from @APKMirror