Hello Mi fans,
Xiaomi is aware of a bug in the recent OTA firmware updates (V10.3.1.0.PFBMIXM, V10.3.1.0.PFBEUXM) for Mi 9 SE, which can cause the device to be unable to function properly. We have now stopped the release of this update after receiving several user complaints, and are working to resolve the issue. Meanwhile, affected users are encouraged to contact our customer services support (https://www.mi.com/global/support/contact/) for technical assistance.
Thank you for your understanding and support.
https://c.mi.com/thread-2265209-1-0.html