In order to fulfill the basic functions of our service, the user hereby agrees to allow Xiaomi to collect, process and use personal information which shall include but not be limited to written threads, pictures, comments, replies in the Mi Community, and relevant data types listed in Xiaomi's Private Policy. By selecting "Agree", you agree to Xiaomi's Private Policy and Content Policy .
It is recommended after a major upgrade (eg: MIUI 9 to 10 or Oreo to Pie). But for normal updates, it is not required. Especially if you are in Beta, performing a factory reset every week is not the best idea. Only do so if you face serious issues such as no network, frequent FCs (force closes) and so on.