If the board has two flash chips (rare for Atom era), you need both BINs. The J MV6 typically uses a single chip.
Since BIOS files are specific to the laptop model and its hardware configuration (CPU, dedicated GPU), "generic" HannStar files may cause a bricked device. Manufacturer Support : Search the HP Support Sony Support site using your serial number. If only an is provided, you can often extract the by right-clicking the file and selecting "Open archive". Repair Communities hannstar j mv6 94v0 bios bin file extra quality