🔧 Download SPD Research Tool (All Versions) for Windows The SPD Research Tool is an official firmware flashing utility developed by SpreadTrum/Unisoc Technologies Co., specially designed for Android devices powered by SpreadTrum chipsets. It allows users to flash .PAC firmware files, recover bricked devices, and remove screen locks or FRP (Factory Reset Protection) with ease.
📁 What’s Included in the Download: We’ve packaged everything you need into a single ZIP file:
✅ SPD Research Tool (Executable)
✅ SPD USB Driver
✅ Step-by-step Flashing Guide (TXT or PDF format)
Both the latest and previous versions are available to ensure compatibility with a wide range of devices.
📥 Download SPD Research Tool for Windows The SPD Research Tool is a lightweight and official firmware flashing utility developed by Unisoc Technologies Co. It enables users to install PAC-based stock ROMs on smartphones and tablets powered by SpreadTrum/Unisoc chipsets. Whether you're repairing a bricked device or bypassing FRP locks, this tool is designed for smooth and effective performance.
🛠️ How to Flash Firmware Using SPD Research Tool
Follow the step-by-step guide below to flash .PAC stock ROMs on your SpreadTrum/Unisoc-powered Android device using SPD Research Tool:
1️⃣ Prepare Your Files & System
📥 Download the latest version of the SPD Research Tool to your Windows computer.
🗂 Extract both the tool and the stock ROM (PAC format) to easily accessible folders.
🔌 Install the SPD USB Driver on your PC.
Note: Without the driver, the tool will not detect your device.
2️⃣ Start Flashing Process
🖥 Open the tool by launching ResearchDownload.exe.
📂 Click on the Load Packet or firmware loading button.
📄 Browse and select the PAC firmware file from your extracted folder.
▶️ Click the Start button in the tool interface.
📱 Power off your device and connect it to the PC while holding both Volume UP + Volume DOWN buttons.
⏳ Wait for the flashing process to complete. A green "Passed" message indicates success.
⚠️ Important Notes:
🔋 Ensure the device has at least 50% battery.
💾 Back up important data before flashing — it will be permanently erased.
❌ Do not disconnect the device while flashing is in progress.
📖 Readme First
⚠️ Caution:
Before proceeding with the flashing process using the SPD Research Tool, ensure you take a full backup of your device. Flashing stock firmware will permanently erase all data, including photos, contacts, apps, and personal files.
🙏 Credits:
All credit goes to Unisoc Technologies Co., the official developers of the SPD Research Tool. We are simply sharing the tool to assist users and technicians for educational and repair purposes.
