Vivo-fastboot-bootloader-unlock-reboot-fb-to-edl -

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

: Unlocking the bootloader performs a factory reset. Back up everything. vivo-fastboot-bootloader-unlock-reboot-fb-to-edl

EDL (Emergency Download) mode is used for deep system flashing via Qualcomm tools (QPST/MSM). : In CMD, type: fastboot oem edl . The screen will go black

: This process typically voids your official warranty. vivo-fastboot-bootloader-unlock-reboot-fb-to-edl