Oppo F11 (CPH1911) has gone "dead" after a firmware flash, it is likely in a state known as a . This happens when the bootloader is corrupted or the wrong firmware version is applied, causing the device to show no signs of life, a black screen, or being recognized only as a "MediaTek USB Port" when connected to a computer. Common Causes of Post-Flash "Death"
: The cable was disconnected or the PC shut down during the flash. oppo f11 dead after flash
: Hold the Power + Volume Down buttons for 15 seconds. Oppo F11 (CPH1911) has gone "dead" after a
: Flashing a ROM meant for a different model or region. : Hold the Power + Volume Down buttons for 15 seconds
If the screen remains black and the phone only shows up in your PC's Device Manager as , you must perform a "Dead Boot Repair". Required Tools