Plug in your malfunctioning ChipYC2019 USB drive. The tool should immediately detect it, displaying the controller name, flash ID, and current capacity (often incorrect, like 0MB or 8MB).
Extract the MP Tool archive to a folder on your desktop (avoid long directory paths or system folders). Run MPTool.exe as Administrator. firstchip chipyc2019 mp tool new
The interface will be sparse. Click the button (often a gear icon or a button that says "设定"). The password is typically blank or 123456 or 111111 . If prompted, try 320 (a common FirstChip debug password). Plug in your malfunctioning ChipYC2019 USB drive
