Update Pop-up and Update Button

Hi
I have been using AB Download Manager for a week. It's amazing! I was using version 1.3.0. When I searched, I found that a new version had already been released, and that is 1.4.1. But I didn't receive any Notification or Pop-up for the Update. Also, I didn't find any update button in the Settings or Tools of AB Download Manager. When I tried to install new version over the existing one, it went gone. I tried it 3 times but couldn't install the new one. So I had to uninstall the previous version and then installed the New Version. Please provide Update Button in 'Tools' or 'About' and consider 'Update Notification' or 'Update Pop-up' in upcoming updates if possible.

Thank You