---
title: How to install vQmod for OpenCart
description: "vQmod (Virtual File Modification System) enable user to override the PHP modification on-the-fly without actually changing the source files. This will be very useful especially if you would like to extend a feature that can't be done using the plugin…"
url: "https://www.fraudlabspro.com/resources/tutorials/how-to-install-vqmod-for-opencart/"
updated: "2026-05-28"
category: "E-Commerce Platforms / OpenCart"
tags:
  - fraud detection
  - fraud prevention
  - fraudlabspro
  - iovation
  - maxmind
  - reduce chargebacks
  - riskified
  - sift science
  - signifyd
  - whmcs
---

# How to install vQmod for OpenCart

vQmod (Virtual File Modification System) enable user to override the PHP modification on-the-fly without actually changing the source files. This will be very useful especially if you would like to extend a feature that can't be done using the plugin method.

This tutorial provide you step by step on how to install **vQmod (version 2.4.1)** into **OpenCart**.

1. 1. Download vQmod from [https://code.google.com/p/vqmod/downloads/list](https://code.google.com/p/vqmod/downloads/list). This tutorial will demonstrate you the installation for **vqmod-2.4.1-opencart.zip**. For the latest version, you can download it from the github site at [https://github.com/vqmod/vqmod](https://github.com/vqmod/vqmod)
   2. Unzip the file and upload vqmod folder to your OpenCart directory. [![vqmod folder for OpenCart](https://www.fraudlabspro.com/resources/wp-content/uploads/2017/05/vqmod-1.png)](https://www.fraudlabspro.com/resources/wp-content/uploads/2017/05/vqmod-1.png) *Please make sure the vqmod directory and its contents are writeable. For linux, please be sure the directory mod has configured to 755 or 777.*
   3. On your browser, key in **http://www.yourwebsite.com/vqmod/install** and press enter.
   4. You shall receive the below message if your vQmod had been successfully installed. [![vQmod has been installed](https://www.fraudlabspro.com/resources/wp-content/uploads/2017/05/vqmod-2.png)](https://www.fraudlabspro.com/resources/wp-content/uploads/2017/05/vqmod-2.png)
   5. Done. Please take note that you shouldn't remove the **vqmod** folder after the installation.
   6. You can now upload your vQmod file, for example [FraudLabs Pro](http://www.opencart.com/index.php?route=extension/extension/info&extension_id=12317), into the **xml** directory for running.[![Navigate to xml folder](https://www.fraudlabspro.com/resources/wp-content/uploads/2017/05/vqmod-3.png)](https://www.fraudlabspro.com/resources/wp-content/uploads/2017/05/vqmod-3.png)

 You may refer to [FraudLabs Pro for OpenCart](http://www.fraudlabspro.com/supported-platforms/opencart) for the details of the fraud prevention installation.