The SSS6698-BA is a single-channel USB 3.0 NAND flash controller from Silicon Motion. It supports several NAND vendors, including Toshiba (now Kioxia). The TC58NC6623 marking typically indicates a Toshiba 3D TLC NAND die. In mass production, these drives are initialized by vendors using an MPTOOL. When firmware metadata is corrupted — due to unsafe ejection, voltage fluctuation, or bad blocks — the controller enters a factory mode or reports incorrect parameters. Users then see:

Here is the step-by-step guide to fixing it using the SSS MPTool.

Even if you think you know the chip, verify it.

: Fixes for common "ID BLK Error" or "Burner File Not Found" bugs that plagued original factory releases. The Downsides

for a specific version of the MPTool, or are you trying to resolve a specific error code like "Read Only" or "No Media"?

), commonly found in USB flash drives like the Toshiba TransMemory or certain Kingston models.