Mac download

OK, I downloaded this:
Nuendo_6_Update_Installer_mac_001.dmg
Nuendo_6_Update_Installer_mac_002.dmgpart
Nuendo_6_Update_Installer_mac_004.dmgpart
Nuendo_6_Update_Installer_mac_003.dmgpart

It’s possible to merge those files afterwards by using this command in the Terminal:

hdiutil convert firstFile.dmg -format UDRO -o output.dmg

Reference: http://apple.stackexchange.com/questions/44786/what-are-dmgpart-files-and-what-tools-can-create-merge-or-manage-them

Why steinberg do not put a link to download this files in Steinberg.net?

I cannot find these files anywhere on Steinberg.net or anywhere else.

Did you find a place to download them?

You can download the ISO image here: http://support.steinberg.de/ISOs/Nuendo_6.0.2.iso (7.1 GB)

Thank you for the link.
Unable to install on late 2015 iMac.
Installer says: Wrong Mac OS X Version - you need at least Mac OS X Version 10.6.0 to install this software.

http://www.steinberg.net/en/support/content_und_zubehoer/content_and_accessories_saitfy should help you here.

However, if it’s an El Capitan installation there is no official support anyway. Still, the Installer Tool should work on El Captian as well.