System settings.

Open the system settings, find the About column, and find the hardware version. IBHR-ANDROIDSTBGA-068 is high security. If it is IBHR-ANDROIDSTB-068, it is non-high security.

Gaoan is actually the abbreviation of high-security chip. CA is the abbreviation of CertificateAuthority, which can be translated as certificate authorization. In layman’s terms, it is a kind of digital signature authentication.