The official release of Kaspersky 21.16.6.467 ZH_CN is available through technical support.
The biggest update should be on the UI.
Because the official has not been officially updated, so the installation package will not be hung, and the email support page says that you need to install the package if you want to upgrade the version, and an email will be sent in a few minutes.
Genuine paid licenses may be required for technical support.