FAQ
TL;DR: Fix OP-COM China clone setup on Windows 10 in 3 steps. "Just remember that you need to fire it up as Admin." Use OP-COM/VAUX-COM 120309a and, if needed, switch USB port/cable. [Elektroda, bubu1769, post #20907513]
Why it matters: This FAQ helps Windows 10 users get OP-COM China clones talking to their cars without driver or firmware headaches.
Quick Facts
- Windows 10 tip: disable driver signature enforcement when drivers won’t load, then install. [Elektroda, bubu1769, post #18920978]
- Recommended software: OP-COM/VAUX-COM 120309a; launch the app as Administrator. [Elektroda, bubu1769, post #20907513]
- Hardware variant note: Some interfaces are V5 boards; matching software/driver expectations matters. [Elektroda, bubu1769, post #17479177]
- Connectivity gotcha: A bad USB cable or certain laptop ports can block comms; switching ports fixed it. [Elektroda, Lidiawestphal, post #17480635]
- Firmware risk: Don’t flash firmware on unknown-layout clones or you may brick the tool. [Elektroda, bubu1769, post #18919989]
How do I install an OP-COM China clone on Windows 10?
- Download a complete OP-COM/VAUX-COM 120309a package that includes drivers. 2. Install the software and the supplied USB drivers. 3. Connect the interface and complete setup inside the app. If you still have trouble, see the driver-signature and USB port notes below. [Elektroda, bubu1769, post #17480496]
Do I need to run the OP-COM/VAUX-COM app as Administrator?
Yes. It prevents permission-related errors when the app accesses drivers and COM ports. As one expert put it, “Just remember that you need to fire it up as Admin.” Right‑click the shortcut and choose Run as administrator each time. [Elektroda, bubu1769, post #20907513]
Do I need to disable driver signature enforcement on Windows 10?
Often yes, especially on 64‑bit Windows. Reboot to Advanced Startup, disable driver signature enforcement, then install the USB driver. As noted by an experienced user, “The difference is mainly in disabling the digital signature verification of drivers.” Re‑enable secure settings after successful installation. [Elektroda, bubu1769, post #18920978]
The program keeps asking to install USB drivers. How do I fix it?
Swap the USB cable and try a different laptop port. In this thread, 1 out of 1 such cases was fixed by changing cable/port, with the left‑side ports working correctly. Reinstall the driver only after confirming the physical link is stable. [Elektroda, Lidiawestphal, post #17480635]
I get a critical error after Windows detects the interface. What now?
Treat it as a hardware link issue first. Replace the USB cable and move the plug to another laptop port. One report showed the system recognized the device, but a critical error appeared until ports were changed. Retest after each change. [Elektroda, Lidiawestphal, post #17479420]
Which software version should I download if my CD is broken?
Use OP-COM or VAUX-COM 120309a from reputable mirrors. Install and run it as Administrator for reliable startup. This version is commonly paired with China clone interfaces and has broad community support. [Elektroda, bubu1769, post #20907513]
Is OP-COM 1.99 compatible with Windows 10?
Yes, but mind driver policy differences. On Windows 10, the key change is disabling driver signature verification to let the USB driver load. After installing, you can re‑enable enforcement and use the tool normally. [Elektroda, bubu1769, post #18920978]
Should I flash or change the firmware on my clone?
Avoid firmware changes unless you are certain about the interface’s internal layout. “Only if you are not sure about the originality of the layout in the interface, you better not try to change the firmware.” It’s a common brick risk. [Elektroda, bubu1769, post #18919989]
My board looks like a V5. Does that affect setup?
It can. Different board revisions may have different component layouts and expectations for software/firmware. Identify your board version before attempting firmware tasks, and stick to known‑good software builds during setup. [Elektroda, bubu1769, post #17479177]
Where can I find a complete installer with drivers?
Community threads often share full VAUX‑COM/OP‑COM packages that include drivers and instructions. Follow a trusted post that says it has “everything you need,” then install as directed. [Elektroda, bubu1769, post #17480496]
Support asked me for About and Settings screenshots. Why?
Those screens reveal the detected interface, firmware, and driver bindings. “Yes, give screen from the ‘About’ and ‘Settings’ tab.” Sharing them speeds diagnosis without guesswork. [Elektroda, bubu1769, post #17479414]
The app won’t proceed without a USB driver. What’s the first check?
Confirm Windows actually enumerates the device on a stable port. The original poster saw recognition only after moving to another laptop socket. Stabilize the link, then rerun the installer once. [Elektroda, Lidiawestphal, post #17479213]
How can I quickly triage connection problems before deeper fixes?
Do a fast three‑point check: 1) change USB port, 2) swap the cable, 3) run the app as Admin. This sequence resolved the thread’s connection failure without reinstalling Windows or flashing firmware. [Elektroda, Lidiawestphal, post #17480635]
After changing the USB port, how do I verify Windows sees the adapter?
Reconnect, wait for the chime, and reopen the app. One user noted, “The system read the device well after connecting it to another socket,” which confirmed the port change helped before any other steps. [Elektroda, Lidiawestphal, post #17479420]
, cd of course damaged, downloaded the file from chomikuj 
