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Installation instruction is quite easy – just download specially crafted Mi Fit APK, uninstall official Mi Fit, install the custom one and your firmware will be updated automatically! After that, you can use any Mi Fit you want.
Custom Mi Fit: Xiaomi Mi Smart Band 4
1. It works for both Global and Chinese versions of Mi Band 4!
2. Installing firmware updates is always done at your own risk!
Russian Language as an example: