Why is my phone unable to receive system updates?

Thank you for your attention regarding the phone’s system version. 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 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.