Open the device. If you can't physically open it, use (Windows) or lsusb (Linux). Look for: VID=048D PID=1234 (Typical FirstChip IDs) and Chip Vendor: FirstChip Chip Part: CHIPYC2019 .
: The leading archive for all FirstChip MPTools and APTools. firstchip chipyc2019 mptools new
Using the wrong tool for your specific controller can permanently brick your USB drive. Open the device
: Scan the NAND flash memory and "mark" damaged sections so the controller avoids them. Latest Updates (2024–2026) firstchip chipyc2019 mptools new