Controller Vendor: Firstchip Controller Part-number: Chipyc2019 Repack

Click . The tool will begin scanning the flash memory. This process can take anywhere from 5 minutes to an hour depending on the capacity and the "Binning" level selected.

Plug in your USB drive. If the tool is compatible, it should show a colored box with "Ready" or a "Wait" status.

detection (e.g., a 64GB drive containing only 16GB of actual NAND). Repair & Mass Production Tools (MPTool)

If the software doesn't see your YC2019 drive, you may need to enter "Test Mode." This involves manually shorting two pins on the controller chip while plugging it in. This forces the controller into a state where it can accept new firmware.