Nokia Online Service Tool (OST LA) is the authorized service center program used to write official .nb0 and .mlf firmware files to HMD Nokia Android smartphones in Download Mode.
Get the authentic, verified release of Nokia Online Service Tool (OST LA). Packed in a clean archive with all necessary runtime components.
| Property | Specification Details |
|---|---|
| Software Name | Nokia Online Service Tool (OST LA) |
| Current Version | 6.2.8 |
| Target Architecture | Qualcomm Snapdragon & MediaTek (Nokia Devices) |
| Utility Category | OEM Service Center Flasher |
| Developer / Origin | HMD Global / FIH Mobile |
| Supported Windows OS | Windows 11, 10, 8.1, 7 (32/64-Bit) |
| Download Size | 89.2 MB |
Follow these standard engineering steps to safely execute firmware operations using Nokia Online Service Tool (OST LA) on your Windows PC:
Download the official zip file from the mirror above and extract it into a dedicated folder on your local drive (e.g., C:\tools-nokia-ost\). Avoid deep paths with spaces or non-English characters.
Ensure the appropriate Windows USB driver for your target device and chipset is installed. Check our USB Drivers Hub for official manufacturer installers.
Right-click the main executable file inside the extracted folder and select Run as administrator to grant required raw USB port access permissions.
Load your official firmware package into the interface, boot your phone into its specified flashing mode (Fastboot, Download Mode, or EDL 9008), and connect via an authentic OEM USB cable.
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