Mt6781 Sp Flash Tool Exclusive [extra Quality] -

Flashing carries risks. Always use firmware matched exactly to your device model. On newer chipsets like the MT6781, attempting to flash an incorrect preloader can permanently brick the hardware.

The SP Flash Tool provides a direct communication bridge to the MediaTek preloader, bypassing the Android OS to perform critical tasks: mt6781 sp flash tool exclusive

Change your USB port (preferably use a USB 2.0 port on the back of the PC motherboard) and replace the USB data cable. Flashing carries risks