Via Vl-813 Usb 3.0 Hub Controller Firmware Version 03c1 Jun 2026

External SSDs using UASP would often drop to slower BOT (Bulk-Only Transport) mode or corrupt data during large transfers. Firmware 03C1 patched the command queue handling, making UASP reliably functional.

The official manufacturer’s site had been a "404 Not Found" for a decade. The newer drivers were bloated and ignored the specific hardware timing of the VL-813. He needed the 03C1—the "Golden Build." It was rumored to be the only version stable enough to handle the erratic voltage of high-capacity vintage drives. Via VL-813 USB 3.0 Hub Controller Firmware Version 03C1

Here’s what lsusb -v shows for a typical VL-813 with 03C1 : External SSDs using UASP would often drop to