Ensure you have the Vivo MTP/USB Drivers installed on your PC so the device is recognized in "Preloader" or "Fastboot" mode. Alternative Recovery Methods
Navigate to Settings > System upgrade to check for official OTA updates. vivo-y12s-pd2036f-stock-flash-file-firmware-rom
If your device is still partially functional, you can attempt a recovery before a full flash: Ensure you have the Vivo MTP/USB Drivers installed