Vivo-fastboot-bootloader-unlock-reboot-fb-to-edl [BEST]

The screen will go black. The PC should detect it as "Qualcomm HS-USB QDLoader 9008". :

💡 : If fastboot oem edl returns an "unknown command" error, your device's bootloader might still be locked or the command is restricted by the current firmware version. To help refine these steps, vivo-fastboot-bootloader-unlock-reboot-fb-to-edl

If software commands fail, you must open the back cover and short the "Test Points" on the motherboard while connecting to USB. The screen will go black

: This process typically voids your official warranty. If software commands fail