If the MPUtility recognizes the drive but says "no firmware found," you may need to search the USBDev Forum
The most reliable tool for identifying the controller model and Flash ID. sss6698-bb usbdev
The is a USB 2.0 NAND flash memory controller manufactured by Silicon Motion, Inc. (formerly known as Solid State System – SSS). It belongs to the SSS669x family of low-cost, low-power controllers widely used in entry-level USB flash drives, promotional USB sticks, and embedded storage solutions. If the MPUtility recognizes the drive but says