Click the button next to the Programmer Path and select your firmware's .mbn or .elf firehose file.
Ensure you are using the correct firehose.mbn included in the official oppo cph1809 flash file qfil updated
package. Restart the QFIL tool, reconnect the device in EDL mode, and use a direct motherboard USB port. 2. Device Manager Shows "Unknown Device" Click the button next to the Programmer Path