The OPPO F5 Youth runs on the chipset. If the preloader file on the device becomes corrupted, the phone will not turn on (it will be "dead"), and the computer will not recognize it when plugged in, or it will detect it as an "Unknown Device" or make a disconnect sound immediately.
: Flashing a preloader typically involves a full flash, which will wipe all data on the device. Are you currently trying to a device or just looking to update the software through official channels? How to install Oppo Preloader USB Driver and Download Link 29 Sept 2019 — oppo f5 youth preloader file download
If you are unable to find the preloader file on the OPPO website, you can try the following alternative sources: The OPPO F5 Youth runs on the chipset
You will very rarely find the preloader.bin file alone. Instead, you must download the for the OPPO F5 Youth (CPH1851) and extract it. Are you currently trying to a device or