The firmware’s primary responsibility was managing the hardware's specific capabilities, most notably the 16MP front-facing camera. The integrated software processing—specifically the algorithms—was embedded deep within the firmware to ensure low-latency photo processing and high-quality output, which were the device's main selling points. Performance Management and Optimization
To repack for flashing via fastboot (requires unlocked bootloader – not possible on retail): oppo a57 2016 firmware
Officially, the OPPO A57 supports: