Firstchip Chipyc2019 Link

If your device is showing "No Media," is write-protected, or has corrupted firmware, you will need a Mass Production Tool (MPTool) to re-flash it. Identification : Use the latest ChipGenius v4.21

It depends on your use case:

High-capacity flash storage has a "floor" price; if it's 80% cheaper than a reputable brand, the ChipYC2019 is likely hiding inside. firstchip chipyc2019