The hardware may use a chip that requires proprietary, signed drivers that are not publicly distributed.
These drives are notorious for corruption, showing "Write Protected" errors, disappearing from Windows Explorer, or masquerading as high-capacity devices (e.g., a fake 128GB drive that actually only holds 4GB to 8GB of actual hardware memory).
Upon reboot, press or F7 to select Disable driver signature enforcement . Step 2: Edit or Obtain the Patched .INF File
Click the button on the main UI. The software will begin writing a clean, patched firmware layer to the FirstChip controller.
It looks like you’re referencing a specific patch note or device ID string:
Unzip the downloaded FirstChip MPTool archive. Right-click FirstChip_MpTool.exe and select . Your drive should appear in one of the active grid slots, displaying its raw flash capacity. 2. Access Settings vid 346d pid 5678 best patched
A Code 10 error usually means the driver is mapped correctly, but the firmware on the device is incompatible with that software version. Try sourcing an older revision of the base driver before applying the VID/PID patch. Safety and Best Practices
controller. If you are looking for the "best patched" solution for these devices, you are likely dealing with a drive reporting an incorrect capacity (e.g., a 64GB drive that is actually 16GB) or one that has become read-only. Technical Device Profile Vendor ID (VID): (Shenzhen SanDiYiXin Electronic Co., Ltd) Product ID (PID): (Disk 2.0 / ProductCode) Common Controller: FirstChip FC1178BC or FC1179 Often SanDisk or Hynix TLC/QLC memory Recommended "Patched" Tools & Fixes
If the drive still shows issues after flashing, you may need to:
drives come pre-formatted in legacy FAT32. This format handles sequential processing poorly on these specific microcontrollers, resulting in a sluggish 6.5 MB/s write speed.
Locate the .zip file containing the modified .inf and .sys files. Disable Driver Signature Enforcement (Windows 10/11): Go to Settings > Update & Security > Recovery. Click "Restart now" under Advanced Startup. The hardware may use a chip that requires
If you want to know which version of the MpTools to use, I can help you find a download link if you can share the exact controller version. HDD GURU FORUMS HDD GURU FORUMS • View topic - FirstChip FC2279 BA7
: When you mention "best patched," it implies you're looking for the most up-to-date or reliable drivers or firmware for this device. Device manufacturers often release updates to improve performance, fix bugs, or add features.
Sometimes different versions of the patch exist depending on the specific sub-device functionality.
5. Summary Matrix: Fixing vs. Replacing VID 346D PID 5678 Drives Drive Issue Status Core Root Cause Best Patch / Corrective Action Expected Outcome Corrupted controller lookup table memory. Run FirstChip MpTools with default scan presets. Restores full use at native drive size. Fake Size Reported (e.g., 64GB showing but failing)
after attempting a patch to verify that the reported storage is actually writable and not just a "ghost" partition. Critical Warnings Data Loss: Using MPTools to "patch" or fix the firmware will erase all data on the drive. Low Success Rates: Step 2: Edit or Obtain the Patched
Finding a "patched" solution for VID 346D PID 5678 is a journey many USB drive owners have found themselves on. While the process can be technical, it offers a real chance to revive a seemingly dead device. The key is patience, identifying the exact controller, and using the right community-vetted "patched" tools.
Download the FirstChip MPTools (search for the latest version, as v1.0.5.2 is commonly cited for fixing these).
: If you're looking for drivers or patches for VID 346D PID 5678 , here are some steps you can take:
: Typically FC1178BC , FC1179 , or FC2279 .