No. Downloading random .mbn files from forum links is a recipe for a hard brick. Stick to official OST LA tools or factory warranty service.
Verify that the top of the software interface detects the active COM port assigned to your phone. Click the button to begin the transfer.
In EDL mode, the phone's storage chip (UFS or eMMC) is completely locked to standard commands. The Firehose loader is injected into the device's volatile memory (RAM) via a computer. Once running, it establishes a high-speed data pipe—hence the name "Firehose"—between your PC servicing tools and the phone's storage partition. Why the "New" Nokia 14 Firehose Loader Matters
Using the Nokia 14 Firehose loader unlocks deep system access, allowing you to perform complex technical operations: 1. Unbricking and Firmware Flashing