Spreadtrum Sci Usb2serial Ok Link -

You need the "Spreadtrum USB Signed Drivers." Standard Android MTP drivers will not work for deep-level flashing.

Spreadtrum Communications (rebranded as Unisoc) utilizes a proprietary bootloader protocol embedded directly into the silicon of its chipsets. When a device is bricked, turned off, or forced into a special boot state (often called Download Mode), the regular Android operating system does not load. spreadtrum sci usb2serial ok

The key combination is crucial. For most Spreadtrum devices, you need to press and hold the Volume Down or Volume Up button while inserting the USB cable to boot the phone into "Download Mode" (UBD mode). The phone screen will likely remain blank, but you may hear a connection sound on your PC. You need the "Spreadtrum USB Signed Drivers