: Flashing will erase all data on the device. Ensure you back up any important information before proceeding. Symphony B66 Stock Firmware ROM (Flash File)
: Ensure the correct USB drivers (MTK VCOM or Spreadtrum drivers) are installed on your PC. Load the File symphony b66 flash file link
Once the tool detects the device, the flashing process will begin automatically. : Flashing will erase all data on the device