Which version should I install

Hi. I have a Squeezebox Classic and am having a problem getting Sirius/XM to play. I've checked my login information, and it is correct. I am running Squeezebox Version: 7.5.5, and am wondering if I should install a newer version of the server software. If so, can anyone point me to the which version would work best for my Squeezebox Classic.

Thanks.