Yes, on Astra H 1.9 CDTI, Zafira B 1.9, Vectra C 1.9/2.0 – but wait for engine temperature >80°C.
Reconnect Opcom to USB. Open Opcom software. Go to Help > About. You should see:
Firmware version: 1.67
Hardware version: 1.0
Bootloader: 1.0
If it shows anything else, re-flash.
When you find a valid download, it should include:
File size: ~45–60 MB for the full package. Any file under 10 MB is almost certainly a virus.
| OS | Works? | Notes | |----|--------|-------| | Windows XP | ✅ Best | No driver issues | | Windows 7 (32/64) | ✅ Good | May need test mode | | Windows 8/8.1 | ⚠️ Possible | Driver signing must be disabled | | Windows 10/11 | ⚠️ Unstable | Often requires older USB drivers and compatibility mode |
Recommendation: Use a dedicated Windows 7 32-bit laptop or virtual machine for stability.
Warning to include (if this is a public forum post):
"Always back up your original firmware (usually 1.45) before flashing to 1.67. If the flash fails, your interface becomes a brick."
Opcom Firmware 1.67 is widely regarded by the automotive community as one of the most stable and versatile firmware versions for the Opcom diagnostic interface, particularly for Opel and Vauxhall vehicles manufactured between 1987 and 2016. Hidplanet.lv Key Features and Capabilities
Firmware 1.67 is often preferred because it allows the interface to bridge the gap between older software versions (like VAUX-COM 120309a) and newer professional versions. Hidplanet.lv Broad Vehicle Support:
It provides comprehensive diagnostics for almost all electronic systems, including the Engine (ECM), Transmission (TCM), ABS, ESP, and Airbags (SRS). Advanced Coding:
Beyond just reading codes, it supports vehicle coding for added equipment like cruise control, xenon headlights, and fog lights. Service & Maintenance:
It can reset service intervals and perform immobilizer synchronization, including adding or deleting ignition keys. Live Data Monitoring:
One of its strongest selling points is the ability to record live data parameters, which is essential for diagnosing intermittent faults that don't always trigger a fault code. Hidplanet.lv Why Choose 1.67 Over Other Versions?
Many users consider 1.67 the "last official stable firmware". Flashability:
Unlike some newer "fake" versions (like 1.95, 1.97, or 1.99) which may be locked or based on older 1.41 chips with faked version numbers, genuine 1.67 interfaces often support up- and down-grading to different firmware versions using tools like Stability:
Users have reported that newer versions like 1.70 can be unstable, often losing connection with specific modules like the suspension or ECU. Version 1.67 is frequently cited as the most reliable for consistent communication. User Feedback & Performance
Users frequently praise the tool for its dealership-level depth, noting it can save hundreds of dollars by avoiding professional diagnostic fees. It has been verified to work on newer models like the for programming and code deletion. Opcom Firmware 1-67 Download
While powerful, it can be hardware-sensitive. Some users have reported issues where the interface suddenly stops connecting or fails to communicate with specific modules like the Park Brake on certain years. Compatibility Note: It is primarily compatible with Windows XP, 7, 8, and 10
. For the best results, it is often recommended to use it with software version 2016 Professional Hidplanet.lv Safety and Installation Tips To ensure a successful download and setup:
Here are some features related to Opcom Firmware 1.67 Download:
Overview
Key Features
Technical Details
Benefits
Downloading and Installing Opcom Firmware 1.67
Troubleshooting and Support
The Opcom Firmware v1.67 is widely considered the most stable "gold standard" for Opel/Vauxhall diagnostic clones, primarily because it supports a broader range of software versions and car models compared to newer, often "fake" versions like v1.99. 🛡️ Key Takeaways: Why v1.67?
True Compatibility: It is the last official-style firmware that works reliably with the PIC18F458 chip.
Anti-Brick Safety: Unlike v1.9x versions, v1.67 is less likely to "kill" your interface during a software check.
Software Range: It works seamlessly with popular versions like Vaux-Com 120309a and the newer 2021 (200603a/b) software.
Car Coverage: Provides stable communication for vehicles from the late 90s up to approximately 2021 models (depending on the software bundle used). 📥 Download & Installation Guide
Downloading firmware often requires caution as most links are hosted on community forums or mega-drives.
Check Hardware: Ensure your device has the PIC18F458 chip. If it has a "fake" chip (like the common 5-pin variants), flashing v1.67 will likely brick the device.
Drivers First: Install the FTDI drivers before connecting the cable to your PC.
Firmware Loader: Use a tool like OCflash to change the firmware version. Yes, on Astra H 1
Source: Reliable downloads are usually found on Vauxhall Owners Network or specialized OBD blogs like OBD2Shop. ⚙️ Performance Review Stability ⭐⭐⭐⭐⭐ Rarely drops connection during live data streaming. Programming ⭐⭐⭐⭐☆ Safe for key coding and variant configuration. Ease of Use ⭐⭐⭐☆☆ Requires manual driver installation; not "plug and play." Value ⭐⭐⭐⭐⭐ Best alternative to the expensive professional Tech-2. ⚠️ Potential Issues
Connection Drops: Some users report intermittent disconnecting on specific older models (e.g., Astra G) if the cable quality is poor.
Fake Chips: Many modern clones sold as "v1.99" cannot be downgraded to v1.67 because they lack the necessary internal hardware. If you'd like, I can help you: Identify if your hardware chip is compatible for a flash. Find specific driver links for Windows 10 or 11.
Explain how to program a specific module (like keys or cruise control).
If BootLoader fails, you need a PIC programmer:
This is advanced and not recommended unless necessary.
Opcom Firmware 1.67 download is frequently shared within automotive enthusiast communities. The author of this article does not host or provide direct download links. Always ensure you have the right to modify your vehicle’s software. Reprogramming ECUs can void warranties, trigger immobilizer lockouts, or brick modules if interrupted. Use at your own risk. Consult professional diagnostic resources before programming safety-critical systems (ABS, airbag, EPS).
The Opcom Firmware 1.67 is widely regarded by users as a stable "golden version" for Opel diagnostic tools, often preferred over higher-numbered versions (like 1.99) which are frequently identified as non-flashable "fake" updates. This firmware allows the OP-COM interface to communicate with vehicle modules for models ranging from 1987 up to 2021. Key Features of Firmware 1.67
Broad Compatibility: Supports diagnostics for Opel, Vauxhall, Holden, and Chevrolet vehicles.
Flashability: Unlike many newer versions, 1.67 is compatible with the PIC18F458 chip, allowing users to reflash or downgrade the firmware if a specific vehicle module is not being detected. Advanced Diagnostics:
Reading and clearing fault codes with detailed descriptions.
Real-time "Live Data" monitoring of engine, transmission, ABS, and SRS systems.
Programming & Adaptation: Enables coding for new keys, cruise control activation, and resetting service intervals. Installation & Download Overview
Downloads for this firmware are typically bundled with diagnostic software such as VAUX-COM 120309a or OP-COM 2021 Professional.
Software Setup: Install the diagnostic application (e.g., VAUX-COM) and accept the license agreements.
Driver Installation: Connect the cable via USB. You must often manually install the FTDI CDM Drivers through the Windows Device Manager to ensure the USB serial converter is recognized.
Note: On Windows 10/11, you may need to disable Driver Signature Enforcement to install these unofficial drivers.
Interface Test: Open the software, navigate to "Settings," select "Interface Type" (usually Revision B/B+), and click "Test Interface" to verify the firmware is successfully running at version 1.67. Critical Technical Requirements Reconnect Opcom to USB
OP-COM is a powerful PC-based diagnostic software designed specifically for Opel and Vauxhall vehicles. For many enthusiasts and DIY mechanics, finding the right firmware version for their interface—specifically Opcom Firmware 1.67—is the key to unlocking stable communication with newer vehicle modules.
This guide covers everything you need to know about downloading, installing, and troubleshooting version 1.67. 🚗 Why Choose Firmware 1.67?
Firmware 1.67 is often considered the "sweet spot" for many OP-COM users. It provides a balance between the older, ultra-stable 1.39/1.45 versions and the newer 1.70+ versions that sometimes struggle with older "clone" hardware.
Improved Compatibility: Better support for vehicles manufactured between 2010 and 2014.
Module Stability: Reduces "interface not found" errors when accessing CAN-bus systems.
Feature Access: Allows for deeper programming of BCM (Body Control Modules) and REC (Rear Electrical Centres).
Clone Friendly: Highly compatible with the common PIC18F458 chip found in many aftermarket interfaces. 💾 Opcom Firmware 1.67 Download & Installation Step 1: Verification
Before downloading, ensure your hardware is compatible. Version 1.67 is designed for interfaces using the PIC18F458 chip. Using this firmware on lower-quality interfaces (like those with fake "OP-COM" chips) can result in a "bricked" device. Step 2: The Download Process
Search for reputable automotive forums or the official manufacturer site if you own an original Hex-USB interface. When downloading: Ensure the file includes the OCFlash.exe utility. Check for accompanying USB Drivers (FTDI drivers).
Always scan .exe files with antivirus software before running. Step 3: Flashing the Firmware
Connect your OP-COM interface to your PC via USB (do not connect to the car yet). Open the OCFlash tool. Select the Firmware 1.67 hex file. Click Update.
Warning: Do not disconnect the cable during this process, or you may permanently disable the interface. 🛠 Troubleshooting Common Issues "Interface Not Found"
This is usually a driver issue rather than a firmware issue. Check your Device Manager to ensure the "USB Serial Converter" is recognized. You may need to disable Driver Signature Enforcement in Windows 10 or 11 to install the drivers correctly. "Programming Failed" If the flash tool fails:
Try a different USB port (USB 2.0 is more stable than 3.0 for this).
Ensure no other diagnostic software is running in the background. Verify your chip type; fake chips will reject the update. ⚠️ Important Safety Notice
OP-COM is a professional-grade tool. While Firmware 1.67 is stable, incorrect coding or firmware flashing can lead to ECU communication errors. Always back up your original settings before performing any "Variant Configuration" or "Output Tests." If you'd like to move forward, I can help you with:
The exact steps to disable Windows Driver Signature Enforcement.
A guide on how to identify the chip inside your interface without opening it.
Instructions on how to use OP-COM to read fault codes once installed.