🔧 Download SPD Upgrade Tool (All Versions) for Windows SPD Upgrade Tool is an official firmware flashing utility developed by SpreadTrum / Unisoc Technologies Co. It's primarily used to flash .PAC stock ROMs on Android smartphones and tablets powered by SpreadTrum/Unisoc chipsets. The tool is widely trusted by technicians for resolving system issues, removing screen locks, and bypassing FRP (Factory Reset Protection).
📥 Download SPD Upgrade Tool for Windows The SPD Upgrade Tool is an official software utility from Unisoc Technologies Co., designed to flash PAC-format stock firmware on Android smartphones and tablets powered by SpreadTrum/Unisoc chipsets. It's a trusted tool for restoring devices, fixing system issues, and bypassing screen or FRP locks.
Tool Information:
Tool Name: SPD_Upgrade_Tool.zip
Developer: Unisoc Technologies Co.
Supported Firmware: .PAC Stock ROMs
Compatible Devices: SpreadTrum/Unisoc-based Android phones and tablets
OS Support: Windows 7, 8, 10, 11 (32-bit & 64-bit)
🛠️ How to Flash Firmware Using SPD Upgrade Tool Follow these simple steps to flash PAC firmware on your SpreadTrum/Unisoc-powered Android device:
1️⃣ Download & Prepare
📥 Download the latest version of the SPD Upgrade Tool on your Windows computer.
🗂 Extract both the tool and the PAC-based stock ROM to accessible folders.
🔌 Install the SPD/Unisoc USB Drivers on your PC.
Without the drivers, the tool won’t detect your device.
2️⃣ Launch the Tool & Load Firmware
🖥 Open the UpgradeDownload.exe file to launch the tool.
📂 Click the “Load Packet” (or similar) button.
📄 Locate and select the .PAC firmware file from your extracted ROM folder.
3️⃣ Connect Device & Start Flashing
▶️ After loading the firmware, click the “Start” button.
📱 Power off your device, then connect it to the PC while holding both Volume UP and Volume DOWN buttons.
⏳ The flashing process will begin automatically. Wait until you see a green “Passed” message.
📖 Readme First ⚠️ Caution: Before flashing your device using the SPD Upgrade Tool, make sure to back up all important data, including photos, contacts, and documents. Flashing stock firmware will completely erase all user data from the device.
🙏 Credits: All thanks and recognition go to Unisoc Technologies Co., the original developers and distributors of the SPD Upgrade Tool. We are only sharing the tool to support technicians and users for repair and educational purposes.
🔌 USB Driver Requirement: To ensure your device is detected properly during the flashing process, you must install the correct USB drivers. We’ve included the official SPD USB Driver in the download package.
