It seems like you've provided some text related to downloading the software 'WinScan2PDF'! I'll do my best to help you with that.

You're looking for a specific version of WinScan2PDF, which is 8.66 for Apple devices. After analyzing the given text, I found a few mentions of different versions (5.77, 4.78, and 6.71) but none of them match what you're searching for.

However, I can suggest some possible ways to get the desired version:

1. Check official websites: You can try visiting the official website of WinScan2PDF or its developers to see if they have a download section with available versions.

2. Software repositories: Look for software repositories like Softonic, CNET Download.com, or FileHippo that may have the 8.66 version available for Apple devices.

3. Search engines: Try searching for 'WinScan2PDF 8.66 for apple download' on search engines like Google to find relevant results.

Before downloading any software, make sure to check the authenticity and reputation of the source. It's also essential to ensure that you're downloading from a trusted website or repository to avoid any potential risks.

If you need further assistance or guidance on finding the specific version you're looking for, feel free to ask!