Downgrade or Upgrade your device: You can use the Oppo A57 Stock Rom Firmware to downgrade or upgrade your device to a new version. It depends on the release of the Stock firmware or your choice if the option is available.You are going to need your device stock Rom for these following reasons someday. It’s always advisable that you backup your device Firmware after purchasing it. You can solve software errors by flashing Stock ROM.More Feature – Zirconium Metal Body Design, LTE Cat 7 300 Mbps Download, 100 Mbps Upload, HSUPA 5.76 Mbps Upload, HSDPA 21 Mbps Download, EV-DO Rev.A (3.1 Mbps Download, 1.8 Mbps Download), 2.5D Curved Glass Screen, Real Sound Track Technology, Gesture Controls, Dual Social Accounts Management, HD Voice.Operating System – Android 6.0 Marshmallow with Color UI 3.0.Sensors -Proximity Sensor, Accelerometer, Ambient Light, Fingerprint Sensor.SIM – Hybrid Dual SIM (Nanoo + Nano/microSD ).Battery – Non-Removable 2,900 mAh Lithium-Ion.Display – Screen size 5.2 inches HD Display (1280×720 Pixels).Memory – RAM- 3GB | ROM 32GB External Memory Supports Up to 128GB (Uses SIM 2 Slot).Camera -13 Megapixels with LED and AF Rear Camera | 16 Megapixel Front camera.Chipset – Qualcomm Snapdragon 435 MSM8940.CPU – Octa-Core 4×1.4 GHz ARM Cortex-A53 + 4x 1.1 GHz ARM Cortex-A53.How To Flash Oppo A57 Stock Rom Firmware.

Oppo a57 custom rom