: While the Lenovo Support site primarily focuses on newer laptops (like the ThinkPad L390 or X390), you can occasionally find legacy mobile drivers by entering your serial number in the Drivers & Software section.

Are you looking to or are you planning to flash new firmware onto your Lenovo A390 Go to product viewer dialog for this item. How to Install Windows Drivers Manually

: If the automatic installer fails, you can manually update through the Windows Device Manager by right-clicking the unidentified device and selecting "Update driver," then pointing to your downloaded driver folder.