How do I Restore a SystemWorks backup from 2011?

I created a backup of my computer's C drive back in 2011 using SystemWorks.  THis is now a defunct programme and I no longer have a copy of it.  I have been using 360 for years.

An old client has asked me to find an old image and I now discover that 360 cannot recover the old systemworks backups.

It is encrypted and I have been on with support for 2 hours and they have cut me loose and have said that I might be able to find a solution here.

I would greatly appreciate your help.

J