If you’ve ever found yourself repairing a "dead" USB stick or working with high-volume flash drive manufacturing, you’ve likely encountered this specific chip. Here is everything you need to know about the Firstchip Yc2019. What is the Firstchip Yc2019?
Change the Vendor ID (VID), Product ID (PID), and manufacturer strings.
: If you are looking to buy a new drive and see "FirstChip" or "YC2019" in the specs, Firstchip Yc2019
: You will need the specific version of the FirstChip MPTool that supports the YC2019 chipset. Configuration : Run the tool as an Administrator on a Windows PC.
Beyond USB flash drives, the FirstChip YC2019/FC1179 has legitimate applications in embedded development. The ARM Cortex-M3 core, combined with its peripheral support, makes it suitable for: If you’ve ever found yourself repairing a "dead"
The is a USB flash drive controller commonly found in budget and unbranded "no-name" storage devices. It is primarily recognized as a component that often requires specialized mass production tools (MpTools) for repair when the drive becomes corrupted or shows "No Media". Technical Specifications
The Yc2019 offers a sweet spot between high input voltage tolerance (30V) and modern synchronous rectification, all in a tiny, easy-to-solder SOT-23 package. It bridges the gap between low-voltage portable ICs and high-voltage industrial regulators. Change the Vendor ID (VID), Product ID (PID),
: When firmware is lost, it defaults to a generic ID (VID: FFFF , PID: 1201 ) and reports 0 bytes of capacity. Recovery & Configuration Features
If the drive isn't recognized at all, you may need to enter "Test Mode" by shorting the data pins on the NAND flash chip while plugging it in—this forces the Yc2019 controller to talk to the PC.
After the repair, use a tool like to test the true capacity of the drive.