@xMissButterfly
Error 208 is mostly an issue talking with either manifest.swtor.com or cdn-patch.swtor.com
The solution really comes down to the cause , if AV or Firewall , or as that link you had , last page was an incorrect proxy setting, all these things have the same affect the patcher fails to download.
This doesn't need to be an issue at your end, as issues on the internet can have the same outcome, and why one person mentioned in that thread he waited till morning and it all worked again.
Most times if this is net caused a VPN is workaround until it comes good on its own
Edit - if one person is posting about 208 then its usually local, if a reasonable number get it at the same time then its likely a Net issue.