You can find the latest version of the myPOS Plugin for OpenCart here.

Supported OpenCart versions:

3.0.0.0, 3.0.1.1, 3.0.1.2, 3.0.2.0, 3.1.0.0alpha, 3.0.3.8

2.3.0.2, 2.2.0.0, 2.1.0.2, 2.1.0.1, 2.0.3.1, 2.0.2.0, 2.0.1.1, 2.0.1.0

1.5.6, 1.5.6.1, 1.5.6.2, 1.5.6.3, 1.5.6.4

If you wish to Update the myPOS plugin you can upload the myPOS plugin only by FTP. 

In order to install myPOS Checkout plugin please follow the steps below:

1. Search for myPOS Checkout plugin at opencart.com 

2. Download the plugin.

3. Upload the downloaded files to your OpenCart installation folder.

4. Sign in to your OpenCart site as an administrator.

5. From your OpenCart Dashboard go to Extensions > Payments.

6. Select myPOS Checkout payment method and click Install.