The first boot after a manual flash takes 5–10 minutes. You will see the "MI" logo for an extended period. This is normal. Do not panic.
To update the firmware on your , you can use the standard over-the-air (OTA) method or a manual flash if you have the specific firmware file. Method 1: Direct System Update (Recommended) Firmware Update on XIAOMI Mi TV 4X 43 L43M4-4AIN
: Older versions of this model have received updates to Android 9.0 (Pie) . The first boot after a manual flash takes 5–10 minutes