Hold down the and Volume Down keys simultaneously. While holding them, connect the phone to your PC using the USB cable.

Extract the firmware zip file and the SP Flash Tool zip file into separate folders on your desktop. Step 2: Configure SP Flash Tool

Download the latest stable version of the Smart Phone Flash Tool. Step-by-Step Guide to Flash Oppo A59s Step 1: Install the USB Drivers

Extract the downloaded and the SP Flash Tool zip into this folder using WinRAR or 7-Zip. Step 3: Configure SP Flash Tool Navigate to the extracted SP Flash Tool folder. Locate and launch flash_tool.exe as an administrator. Once the tool opens, locate the Download tab.

Click the green button located at the top of the SP Flash Tool interface. Completely power off your Oppo A59s.

Disconnect your phone from the USB cable and hold down the button to boot up the device.

This indicates a communication interruption between the phone and PC. Try using a different USB port (preferably a USB 2.0 port on the back of the motherboard) or replace the USB cable.

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Navigate to your extracted firmware folder and select the text file named MT6750_Android_scatter.txt .

Once the yellow progress bar finishes, you will see a green checkmark.

Unstarls the device if it hangs indefinitely on the Oppo logo screen.

(avoid "Format All + Download" to prevent losing unique device identifiers like IMEI).