Spreadtrum Sci Usb2serial Ok -

A typical Spreadtrum SCI interface reveals:

// lsusb -v output (simplified)
idVendor           0x1782 Spreadtrum
idProduct          0x4d00
bDeviceClass         0x02 (Communications)
bDeviceSubClass      0x00
bDeviceProtocol      0x00
Interface 0 (CDC Control)
bInterfaceClass     0x02 (CDC)
bInterfaceSubClass  0x02 (ACM)
Interface 1 (CDC Data)
bInterfaceClass     0x0A (Data)
bEndpoint 0x81 (IN bulk)
bEndpoint 0x02 (OUT bulk)

Some variants use vendor-class (0xFF) to avoid OS auto-binding.

The driver can say "OK" only if the phone broadcasts the correct USB descriptor. Here is the correct procedure:

On most Spreadtrum devices, this triggers "USB Download Mode" automatically. If that fails, try:

Example minimal Linux steps to confirm and open a port:

Rating: ⭐⭐⭐⭐⭐ (5/5) Status: Verified Working

Title: Essential Driver for Spreadtrum Device Servicing

Review: I am writing this review to confirm that the Spreadtrum SCI USB2Serial driver has been successfully installed and is functioning correctly.

Pros:

Cons:

Verdict: If you are a technician or an advanced user working with Spreadtrum/Unisoc chipsets, this driver is mandatory. The status "OK" confirms it bridges the gap between the hardware and the software tool perfectly. Highly recommended for anyone needing to unbrick or service SPD devices.