Right-click it > > Browse my computer for drivers . Point it to the extracted SPD R420 folder and click Next . Troubleshooting Common Issues 1. Waiting for USB Device

Verified signatures to bypass Windows Driver Signature Enforcement in most cases. Download SPD Driver R420 (Verified Link)

Reduces "Device Not Recognized" errors during the flashing process.

This is often normal for Spreadtrum devices in "BOOT" mode. The driver should kick in the moment you start the flashing process in your software.

Supports SC7731E, SC9832E, SC9863A, and newer Tiger series chipsets.

SPD Driver R420 Download (Verified): The Complete Setup Guide

Restart your PC in mode (via Advanced Startup settings). Re-run the R420 installer. 3. Device Connects and Disconnects

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