Vid 346d Pid 5678 Best Verified =link= File
You cannot fix these drives with normal Windows formatting tools. You must use a factory mass production tool () to rewrite the internal firmware.
The system has confirmed that pid 5678 is an authorized publisher. This eliminates man-in-the-middle attacks or corrupted uploads.
The most reliable, community-verified tool for this specific ID is . You can find verified downloads on technical archive sites like USBDev . How to use FirstChip MpTools:
Download the latest version of . Plug in your drive and run the utility. It reads the raw flash ID code directly from the memory die, bypassing whatever fake capacity the firmware claims. If ChipGenius reports a "Total Capacity" or a Flash ID (e.g., Intel QLC ) that differs dramatically from your Windows Explorer reading, your drive has a spoofed capacity. 2. H2testw (Write/Read Sector Verification)
, can achieve read speeds exceeding , though write speeds often remain relatively low, typically between 10–60 MB/s . vid 346d pid 5678 best verified
: For a verified 32GB VendorCo drive, expected speeds are roughly 19MB/s Read and 6.5MB/s Write .
What is the you see (e.g., "Device Descriptor Request Failed")? What brand name is printed on the physical device?
If the tool reports "Data corrupt" after a certain threshold (e.g., past 16GB on a 32GB drive), your drive is confirmed fake. Phase 2: Restoring the Drive Using Verified MpTools
| OS | Driver | Verified Status | |----|--------|----------------| | Windows 10/11 | Sino Wealth official driver v3.5+ | ✅ Best verified (signature required) | | Windows 7 | CP210x driver (modded INF) | ⚠️ Works but not official | | Linux (kernel ≥5.10) | cdc_acm or cp210x | ✅ Best verified – auto-recognized | | macOS | SiLabsUSBDriver (with VID/PID patch) | ⚠️ Manual install needed | You cannot fix these drives with normal Windows
When a storage drive carries (assigned to Shenzhen SanDiYiXin Electronic Co., LTD) and PID 5678 , it almost universally points to a flash drive utilizing a FirstChip FC1178BC controller. These drives are frequently sold on discount e-commerce platforms under spoofed storage capacities (e.g., a drive marketed as 1TB or 2TB that actually only contains 8GB or 16GB of actual memory chips).
When a vid is paired with a pid , it creates a relational link. It tells the system: "The asset from Product 5678, in its version 346d, is the definitive copy." This dual-lock system prevents the chaos of orphaned files and mismatched updates.
If you have plugged in a generic or branded USB flash drive and found the specific hardware identifiers , you are likely dealing with a drive that is either corrupt, unreadable, or showing signs of an artificial capacity layout.
The code VID=346D PID=5678 is more than just a number—it's a gateway to understanding a whole class of affordable USB flash drives. Our deep dive reveals it's typically a Teclast or generic-branded drive with a FirstChip controller, offering decent read speeds but often very slow write speeds. How to use FirstChip MpTools: Download the latest
If you have installed the driver but the device still does not work, try these steps:
Configure the tool (if necessary) to match your memory type. Run the production process to rewrite the firmware.
: A common versatile version used to recover drives and identify true capacity.
Do not trust the filename alone. Right-click the file (if it is a digital asset) and view Properties or Get Info. Look for the "Version" field. Does it explicitly read 346d ? Next, look for "Product ID" or "Project ID." Does it read 5678 ? If the metadata does not match the claim, it is not verified.