# SPD Flash Tool

> Download the SPD Flash Tool, which enables you to flash or install .pac firmware (ROM) on devices powered by Spreadtrum/Unisoc chipsets.

SPD Flash Tool hosts verified Upgrade, Research, and Factory Tool builds for flashing .pac firmware on Spreadtrum/Unisoc smartphones and tablets, plus step-by-step flashing guides for Windows.

## Home

- [SPD Flash Tool](https://spdflashtool.com/): Homepage with the latest SPD Flash Tool releases and links to all tool variants and guides.

## Downloads

- [SPD Flash Tool R27.25.4601](https://spdflashtool.com/download/spd-flash-tool-r27-25-4601/): Latest SPD Upgrade Tool build for flashing UniSoc/Spreadtrum stock firmware on Windows.
- [SPD Factory Tool R27.25.4601](https://spdflashtool.com/factory-tool/spd-factory-tool-r27-25-4601/): Latest SPD Factory Tool build for flashing stock firmware on UniSoc/Spreadtrum devices.
- [SPD Research Tool R27.25.4601](https://spdflashtool.com/research-tool/spd-research-tool-r27-25-4601/): Latest SPD Research Tool build for flashing stock firmware on UniSoc/Spreadtrum devices.
- [All Upgrade Tool versions](https://spdflashtool.com/category/download/): Archive of SPD Upgrade Tool releases.
- [All Factory Tool versions](https://spdflashtool.com/category/factory-tool/): Archive of SPD Factory Tool releases.
- [All Research Tool versions](https://spdflashtool.com/category/research-tool/): Archive of SPD Research Tool releases.
- [SPD Tool source code](https://spdflashtool.com/source/spd-tool-source-code/): Official SPD Tool source code for Upgrade, Research, and Factory tools.

## Tutorials

- [Use SPD Upgrade Tool](https://spdflashtool.com/tutorial/use-spd-upgrade-tool/): Flash or install .pac firmware using the SPD Upgrade Tool on Windows.
- [Use SPD Research Tool](https://spdflashtool.com/tutorial/use-spd-research-tool/): Flash or install .pac firmware using the SPD Research Tool on Windows.
- [Use SPD Factory Tool](https://spdflashtool.com/tutorial/use-spd-factory-tool/): Flash or install .pac firmware using the SPD Factory Tool on Windows.
- [All tutorials](https://spdflashtool.com/category/tutorial/): Index of SPD Flash Tool flashing guides.

## Optional

- [RSS feed](https://spdflashtool.com/feed.xml): Feed of new SPD Flash Tool releases.
- [Sitemap](https://spdflashtool.com/sitemap_index.xml): Full site map for crawlers.
- [Privacy Policy](https://spdflashtool.com/privacy/): Data collection and privacy practices.