| Error Code | Meaning | Fix |
| :--- | :--- | :--- |
| Error 10 (Device cannot start) | Driver .sys file blocked by Hyper-V or Core Isolation | Turn off Memory Integrity in Windows Security → Device Security → Core Isolation. |
| Error 52 (Unsigned driver) | Windows 11’s DSE is active | Use Method 2 (temporary disable) or sign the driver yourself using a self-signed cert (advanced). |
| Error 39 (Driver corrupted) | Conflicting legacy driver remains | Run pnputil /delete-driver rockey4.inf in admin CMD, then reinstall. |
| Dongle LED flashes but not detected | Power management issue | In Device Manager → USB Root Hub → Properties → Power Management → Uncheck "Allow computer to turn off this device". |
Step 1: Download the correct driver
Step 2: Remove old driver remnants
Step 3: Install using Compatibility Mode
Step 4: Accept the unsigned driver prompt (if necessary) feitian rockey4 usb driver windows 11
Step 5: Reboot and test
Cause: The software’s 32-bit runtime library cannot communicate with the driver.
Fix: | Error Code | Meaning | Fix |
Feitian has officially marked the Rockey4 series as End-of-Life (EOL). No new drivers are expected. If your business relies on this dongle:
Feitian does not provide public Rockey4 drivers for modern Windows. The Rockey4 is an older generation (HASP/Rockey2/4). For Windows 11, you should: Step 1: Download the correct driver
If you have the original SDK or installer CD, try Windows 10 compatibility mode – often the Windows 8/10 driver works on Windows 11.
Do not proceed blindly. Perform these checks first: