Firmware Version: CPH1701EX-11-A.35 Device Model: Oppo A57 1. Overview The Oppo A57 (CPH1701) is a popular mid-range smartphone released in 2016. The firmware version CPH1701EX-11-A.35 represents a specific revision of the device's operating system. Blackedraw180726toriblackheybabemissed Top