OnePlus 7T Pro Oxygen 13.W.09 OTA 009 all 2010191130 downgrade Firmware
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How to Flash OnePlus 7T Pro Oxygen 13.W.09 OTA 009 all 2010191130 downgrade Firmware?
1. Download the Firmware file.
2. Extract Firmware in Your PC.
3. Open the Tool through which you will Flash Firmware like Unlocktool, CM2, UMT Pro, DFT Pro or any other which is compatible for your phone.
4. Select the folder where the downloaded Firmware is located and select it.
5. Follow the steps that appear on the screen.
