In the earlier versions of Mi Band such as Mi Band 3, pairing with third-party standalone was pretty easy. However, with the Mi Band 4, Xiaomi started hiding the Authentication key in the file system. This Authentication key is required to use the Mi Band without the Mi Fit app. Hence, I would just need to find out the Auth key.
This key seems to be generated by xiaomi online, but I think there is no api to use in 3rd party app.
Does anyone know how to generate this key? There are currently some solutions to find the generated key by mi fit, but this method is not suitable for a 3rd-party app.