Why is my phone unable to receive system updates?

Thank you for your concern about your phone’s system version. First, please confirm whether you purchased the device through an official Xiaomi channel in your region. If not, we recommend contacting the retailer from whom you bought the device for further assistance. Meanwhile, please temporarily disable the [Check for updates] option in your device settings to avoid additional update failures.
If your device is purchased from the local official Xiaomi channel, to determine if the latest system version is available, please navigate to [Settings] >> [About phone] >> select the [Xiaomi Hyper OS] icon >> and then click on [Check for updates]. If available, download and install it to start the upgrade.
As technology evolves and new mobile phones are released, older models will gradually cease to receive system updates. With prolonged usage, hardware performance may diminish. To ensure a stable user experience, no updates will be planned once the mobile system version achieves optimal stability. Generally, the update cycle for Xiaomi smartphones is around 2-3 years. We appreciate your understanding.
Tips:
To maintain performance, we recommend regularly clearing your phone's cache to free up space and closing rarely used background applications to decrease memory usage.