Download OST Tool (all versions)

You can flash or install the stock firmware (ROM) on Nokia mobile devices using the OST Tool (Online Service Tool), a tiny program for Windows computers.

The most recent version of the OST Tool as well as earlier versions are available here on this page.

Download OST Tool (all versions)

Features of OST Tool

Installer & Portable Application:

Both a portable application and an installer application are included. The supporting USB Drivers are automatically installed on the machine by the installer version. On the other hand, USB drivers are not included with portable applications.

Flash Firmware:

On Nokia devices, it aids in flashing or installing the stock firmware. All you need is the appropriate ROM (firmware) for your Nokia device. Launch the Tool after installing the Nokia Driver. Locate the.nb0 file in the firmware folder by clicking on the browse button, then click. To begin the flashing process, click Next.

Support Nokia Devices:

It is designed to support Nokia mobile devices. Once the appropriate Nokia drivers have been loaded on your computer, OST will quickly identify the connected Nokia device and get ready to flash or install the firmware.

Support .nb0 and .mlf Format:

On Nokia mobile devices, it facilitates flashing or installing stock firmware that is based on.nb0 and.mlf files. The.nb0 or.mlf file is conveniently located in the company-released stock firmware for your Nokia device.

Download OST Tool

All Windows OS versions, from Windows XP to Windows 11 (x32 or x64 bit), are compatible with OST Tool. Use the links below to download the most recent version of the OST Tool if that’s what you were looking for:

VersionDownload Link


[*] How to Use: Visit the How to use OST utility page if you want to find out how to use the utility to flash stock firmware.

[*] Alternative Tool: The ideal substitute is the SUTL3 Tool, which lets you flash or install.nb0 firmware on mobile devices.

[*] Nokia USB Driver: Visit the Nokia Driver page if you’re seeking for the original Nokia USB Driver.

[*] Nokia Firmware: Visit the Nokia Firmware page if you’re seeking for the original Nokia Firmware File.