Download SPD Flash Tool For Every Spreadtrum Unisoc Device

In this tutorial, we will share the download link and list the steps to install the SPD Upgrade Tool on your PC. Qualcomm, Mediatek, and Exynos are the three big players in mobile chipsets. However, a niche segment of devices still runs the Spreadtrum/Unisoc chipset. These include some from Micromax, Lava, and Karbonn, among others. The support and development for these chipsets aren’t the same as the other three chips.

Hence, users might have difficulty flashing files and carrying out other related tasks. Well, not anymore. With the help of the SPD Upgrade Tool, you could easily flash the stock firmware onto your device, upgrade or downgrade the software version, and carry out tons of other tweaks. This guide will examine this tool’s functionality and the steps to flash firmware and ROMs onto the supported devices. Follow along for detailed instructions.

Download SPD Flash tool For Every Spreadtrum Unisoc Device

What is the SPD Upgrade Tool

The SPD Research Tool is a software that lets you flash the stock firmware (PAC) on various devices powered by Spreadtrum/Unisoc, such as smartphones, tablets, feature phones, and more. It offers a simple and hassle-free process that can be completed with just a few clicks, without having to go through the entire setup process. However, before downloading this tool, there are some prerequisites that you need to consider.

The SPD Upgrade Tool is specifically designed to flash .pac and PC5 stock firmware onto Spreadtrum devices. You can also configure the LCD settings, MCP Type, and Read/Write/Erase active flash. This tool has simplified the entire process of flashing ROMs. All you need to do is load the firmware file onto the tool, connect your device to the PC, and click the Start button. The tool will take care of everything else.

Here are some noteworthy features of the SPD Upgrade Tool:

Easy to Use

With so many features baked into the tool, some people on paper might find it hard to complete the abovementioned task. However, that isn’t the case. The entire user interface has been designed so that even first-time users can easily flash the firmware onto their devices without any issue. Then, the multi-language support will be helpful to the non-English speaking audiences.

Portable Application

You don’t have to go through the entire setup process. This tool is a portable application, so double-click on its EXE file, and the tool will be up and running.

Support for Spreadtrum chipset

You could easily flash the .pac and PC5 stock firmware using this tool. Near about all the devices running the Spreadtrum chipset fall under this domain.


Upgradation and downgradation on the software version could be done right from this tool.

Format Device

If you delete all the data from your device, then one option is to reset the device from the Settings menu. However, you might have to go through many menus before you end up in the Reset section. But with the SPD Upgrade Tool, you could easily reset your device with just one click.

Other Features

You could also check some in-device configurations, like information about the device’s Random Access memory. Likewise, you could configure the LCD of your device or even Read/Write/Erase active flash right from within the tool itself.

So, these were the features of the SPD Upgrade Tool. Let’s now check out the steps to use this tool and carry out the task as mentioned earlier.

Download the SPD Flash Tool

SPD Flash Tool [All Versions] Download Link
SPD_Upgrade_Tool_R25.20.3901 Download
SPD_Upgrade_Tool R26.21.2801 Download
SPD_Upgrade_Tool_R27.22.4203 Download
SPD_Upgrade_Tool_R27.22.4204 Download
SPD_Upgrade_Tool_R27.23.0101 Download
SPD_Upgrade_Tool_R27.23.1902 (Latest) Download

How to Use the SPD Upgrade Tool

Before we list the installation steps, you need to go through a few prerequisites. Make sure your device qualifies for all these requirements.


  • To begin with, it is always advisable to take a device backup to remain on the safer side.
  • Next up, we recommend downloading and installing your device-specific USB Drivers onto your PC.
  • Likewise, keeping your device sufficiently charged at least 50% is recommended.
  • Finally, download the latest version of the SPD Upgrade Tool
  • If you use this tool to flash the stock ROM, download your device’s .pac or PC5 stock firmware.

That’s it; these were all the requirements. You may now proceed with the flashing/installation steps.

Flash Firmware using the SPD Upgrade Tool

  1. Connect your device to the PC via the USB Cable.
  2. Now extract the contents of the SpreadTrum Upgrade Tool that you have downloaded. You could do so via the WinZIP or WinRAR application.
  3. Once the extracting is complete, head over to that folder and scroll to the bottom till you find the UpgradeDownload EXE file.
    upgrade download
  4. Double-click on that file, and the tool will launch (as mentioned before, it is a portable app, hence no need to install it).
  5. Now click on the Load packet button. This will be the first option at the top left (refer to the screenshot below).
    load packet Upgrade Tool
  6. Navigate to the downloaded .pac or the PC5 firmware file and hit the Open button.
  7. Once the package has been loaded, click on the Start Downloading button. This will be the third button in the middle (see the below screengrab).
    start download
  8. The flashing process will now start, and you could keep track of the same under the Progress section.
    flashing SPD Upgrade Tool
  9. As and when the process is complete, you should see a green “Passed” message. When this happens, you could hit the Stop button from the menu bar and remove your device from the PC.
    flash success

So this was all from this guide on downloading and installing the SPD Upgrade Tool. We have also listed its detailed features and the steps to flash .pac or the PC5 firmware onto Spreadtrum devices. If you have any queries, do let us know in the comments section below. Rounding off, here are some iPhone Tips and TricksPC tips and tricks, and Android Tips and Tricks that you should also check out.


  1. Hola a todos, por si alguien sabe; ¿Que pasos debo ejecutar para actualizar el sistema en el equipo utilizando este SPD_Upgrade_Tool_R2.9.6004 ? ¿El equipo debe estar rooteado antes? ¿Debo tener la bateria cargada? ¿Que otros cuidados debe tener pendiente? ¿Debo usar alguna memoria MicroSD? ¿Como? Muchas gracias de antemano. Saludos. Adolfo

  2. Can winds mobile prime 2 device insall custom rom..if would..give me the link for the best custom rom fit with winds mobile prime 2 device

  3. My winds prime ll did not detect on my laptop..all thing is GOOD.why..anybody has this winds prime ll driver fow windows 10..upload

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