Open the by pressing Windows Key + X and choosing it from the menu.
Legacy COM drivers lack modern Microsoft digital cryptographic signatures. Windows will block installation unless you temporarily lift this safety restriction:
Download a reputable sciusb2serialv1501.zip or SCIUSB2SERIAL.zip file, such as the 1.5.6.1 version available from trusted driver repositories. Step 2: Extract the File Locate the downloaded zip file in your downloads folder. Right-click the file and select .
Upon reboot, press or F7 on your keyboard to select Disable driver signature enforcement . Step 3: Run the Setup Installer sciusb2serialv1501zip
Right-click the .zip file and extract its complete contents to an accessible folder. Step 2: Running the Automated Installer
: Essential for using the official SPD Upgrade Tool (ResearchDownload) to flash raw stock ROMs ( .pac files) onto bricked devices.
That said, many users have successfully installed and used this driver—or newer versions of the Spreadtrum SCI driver—on Windows 7, Windows 8, Windows 8.1, and even Windows 10 and 11 [7†L4-L11][9†L4-L8]. However, success is not guaranteed, and you may need to take extra steps like (more on that later). Open the by pressing Windows Key + X
If the automatic setup fails to hook the device, you must execute a manual map:
Spreadtrum devices are sensitive; use a high-quality data cable, not just a charging cable.
The file refers to the Spreadtrum (SPD) SCI USB2Serial Drivers , specifically version 1.5.0.1. These drivers are used to establish a connection between a computer and devices powered by Spreadtrum (now Unisoc) chipsets. Primary Uses Step 2: Extract the File Locate the downloaded
Mobile technicians and advanced developers rely on this driver package to execute specific tasks through external software interfaces:
: Ensuring the phone is correctly recognized by the PC when in a low-level diagnostic or download state. Installation Notes
Ensure the device is powered on and connected properly. If it is a phone, it may need to be in "Boot Mode" (often by holding a specific volume button while plugging in the USB).