Free ARM DS-5 Altera Edition

Ok, so google returns this:

https://www.altera.com/products/design-software/embedded-software-developers/soc-eds/ds-5-toolkit.html?gsa_pos=1&wt.oss_r=1&wt.oss=ds-5n

and this:

https://developer.arm.com/products/software-development-tools/ds-5-development-studio/editions/customized-editions/altera/altera-edition

when I search for 'ds-5 altera edition'. Not hard to find.

"Enter a serial number or activation code to obtain a license and enter the serial number that came with your Altera device"

Looks like $995 to purchase software stand alone, or it comes with some select development board kits. You should have gotten a serial number / activation code with the dev kit.