Open the extracted folder and run the as an Administrator. If prompted for login credentials, you may need to use a patched version of the tool or an activation tool (like Oppo All Tool) to bypass the secure login required by Oppo's servers. Step 3: Connect Device in EDL Mode Power off your Oppo A57 completely.
The Oppo A57 (2016) Go to product viewer dialog for this item. oppo a57 2016 firmware