The Unisoc UMS9117 chipset requires specialized Spreadtrum (SPD) drivers, typically found in the SPD Driver R4 package, to facilitate firmware flashing and diagnostic communication via USB. These drivers, essential for tools like Infinity Chinese Miracle-2, also support bootloader unlocking and have gained niche usage in upgrading vintage phones to 4G. For the full guide on downloading and installing these drivers, visit Hovatek .
Select "Install hardware that I manually select from a list (Advanced)". Show All Devices and browse to the extracted driver folder. Select the appropriate file (e.g., unisoc_iot.inf ) and choose SCI Android USB Serial Verification : Confirm the installation by looking for the Spreadtrum Diagnostics Port USB Serial Port under the "Ports (COM & LPT)" section in Device Manager. UNISOC UMS9117 Key Specifications unisoc ums9117 driver top
adb shell top -d 1 -n 10
Complete Guide to Unisoc UMS9117 Drivers: Specs, Installation, and Support Select "Install hardware that I manually select from
package, which facilitates communication between a Windows PC and the device's hardware. Spreadtrum Diagnostics Port : Used for system monitoring, log capturing, and debugging. SPD SCI USB-to-Serial : The critical interface for firmware flashing tools. VCOM Drivers UNISOC UMS9117 Key Specifications Shell command: adb shell
Without correctly installed drivers, a host PC cannot communicate with the device for debugging, flashing firmware, or recovering a bricked unit.
In this blog post, we will break down everything you need to know about the Unisoc UMS9117 driver, including what it is, why you need it, and how to install it correctly to avoid "Download Failed" errors.