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Oppo R9S china to global firmware flashing

Flashing firmware on a mobile device can be a bit tricky, and it's important to make sure that you're doing it correctly to avoid damaging the device.
The process of flashing firmware on a device can vary depending on the make and model of the device and the firmware that you're trying to install. In general, you'll need to follow these steps:

Download the firmware for your device. Make sure that you're downloading the firmware that's specifically designed for your device and that you're downloading it from a reputable source.

Make sure your device is fully charged and that you have backed up any important data on the device.

Get the right tools: To flash the firmware on your Oppo R9S, you will need a firmware flashing tool, such as SP Flash Tool, and the device driver installed on your computer.

Once you have all the tools ready, follow the steps provided in the firmware flashing tool documentation. It will ask you to select the firmware, configure other settings and then you can initiate the flashing process

Be patient, The process of flashing the firmware may take several minutes to complete.

Once the flashing process is complete, your device will reboot and it may take a few minutes for the device to boot up.

It's worth to mention that flashing firmware may be risky. If the process is not done correctly, it can cause permanent damage to your device. So it is advisable to read the instructions carefully, and seek assistance from professional if you have doubts.