I would like to install Indesign and Photoshop CS5 on my Mac. I have a upgrade version for Indesign and Photoshop (both CS5) but i can not find the orignal cd's anymore. The original cd's were for Photoshop CS2 and Indesign CS4. Does anyone know where I can download the originals files?
You shouldn't need the CDs if you have the serial numbers, and I suspect that the upgrade installer may not recognize a downloaded installer for the previous version, so you'd need the serial number to install it.
Are you referring to the original CS5 DVDs or the earlier versions?
You can download CS5 installers here: https://helpx.adobe.com/creative-suite/kb/cs5-product-downloads.html
You will need the serials from the original qualifying product and for CS5.
Also worth noting is the CS5 is unsupported on Yosemite or El Capitan.