Please understand that theme update fixes bugs, improves code and may fix security issues if they arise. It is always advisable to keep your software up to date.
I also provide support only for current versions of my products.
Could you maybe provide more information about the issue you’ve experienced? What exactly has broken in the footer? Maybe the page was cut off? If so, please try to check your PHP version and settings. These knowledge base articles may help you:
Also, visiting your website I can see an error 500 page instead. This definitely points to some problems with server (or PHP) setup. Please contact your hosting company to resolve the issues and upgrade your PHP (and its settings), as stated in aforementioned articles.