El Capitan Installer for older MBP

[dopethescope]

I am running 10.7.5 on an older macbookpro that is not compatible with El Capitan. So even though I am eligible for the free download it won't download - I get an error message. How can I get the 10.11 installer to be able to create my USB using UniBeast?

 

[Stork]

Have any friends or neighbors will a more current MB/iMac? School or library or college or university? (Although with these places, you'll probably have to have the IT folks help as they will more than likely have the computers locked from downloading installation apps.)