Fortunately, FirstChip controllers are highly serviceable using the manufacturer’s Mass Production Tools (MP Tools). Here is everything you need to know about this specific hardware and how to fix it. What is the FirstChip YC2019?
The is a USB 2.0 controller revision commonly found in budget, promotional, or "no-name" flash drives. It is closely related to the FC1178 and FC1179 series of controllers, often appearing in diagnostic tools under these part numbers when a drive is corrupted or shows 0GB capacity. Key Technical Specifications Controller Vendor: FirstChip Technology Co., Ltd. Protocol: USB 2.0 High Speed (100mA max current). Architecture: Single-channel 3D TLC/QLC/MLC support. Common Identifiers: VID: FFFF | PID: 1201 (default/uninitialized state). VID: 346D | PID: 5678 (initialized state). The is a USB 2
| Parameter | Min | Typ | Max | Unit | | :--- | :--- | :--- | :--- | :--- | | Supply Voltage (VDD) | 3.0 | 3.3 | 3.6 | V | | Active Current (Read) | - | 85 | 110 | mA | | Standby Current | - | 150 | - | µA | | Operating Temp | -40 | 25 | 85 | °C | Protocol: USB 2