Netgear M5300-28GF3 (GSM7328FS) - Where are the documentations? (dead links)

Hi,
I'm still repurposing our tons of NG switches.

Before I do anything else, I download the documentation, firmware and so forth.

On NG's website most of the time I can find the documentation on the various webpage(s) but occasionally, the links from NG are dead links.
Especially when the file-names contain spaces (%20) in their URL's.

Using G00gle I often can find said file(s) on NG's Japan website.

However, so far I have not been able to locate:

Software Setup Manual (Software Version 10.x)
https://www.downloads.netgear.com/files/GDC/M5300/M5300%20SM%2016Aug12.pdf

Any suggestions where I can this particular file somewhere/somehow?
Maybe there is a FTP site/link available?

Thanks!