: Specialized "AlcorMP" or "Alcor Micro Production" tools are often used to re-flash or repair these specific controllers.

If you could provide more context or details about where you encountered "au87101a ufdisk," I might be able to help you better:

Before attempting fixes, check :

The AU87101A UFDisk utility is a powerful last resort for fixing "unfixable" USB drives. While the interface looks dated, it provides a level of control that standard operating systems simply don't offer.

Search Google for: Alcor AU87101A MPTool . Look for version 1.2.x or newer. Be careful of virus-laden sites; use reputable firmware repositories (like USBDev.ru or FlashBoot.ru).