Oppo A73t Firmware Direct

| Build Number | Android | Security Patch | Status | | --- | --- | --- | --- | | A73t_11_A.20 | 7.1.1 | Sept 2018 | Old | | CPH1853EX_11_A.45 | 7.1.1 | May 2019 | Stable | | CPH1853EX_11_A.48 | 7.1.1 | Dec 2019 | Final official |

Occasionally introducing new ColorOS features or UI refinements. 4. Installation and Maintenance oppo a73t firmware