Morning, is there any way to obtain license for legacy quartus subscription edition (version 11.1)?

Hi,

You can download the Quartus SE 11.1 from link below,

https://www.intel.com/content/www/us/en/programmable/downloads/software/quartus-ii-se/111.html

Then to activate the license , you need to apply through the Intel self service licensing center,

https://fpgasupport.intel.com/Licensing/license/index.html

Regards,

Vicky