Allows tools like SPD Flash Tool or Research Download to write official firmware to your device.
Connect your Unisoc/SPD device to the PC while it is powered off (often while holding the Volume Down "Boot Key"). Device Manager on your PC (Right-click Start > Device Manager). Look under Ports (COM & LPT) . You should see: SPRD U2S Diagnostic COM Port SPD USB Serial Port Troubleshooting Tips Device Not Recognized Spd Driver 2.0.0.131