Also make sure your host file if you ever touched on that is set back to normal and if you ever used TinyUmbrella that it isn't pointing to Cydia's server on exit.
Error 3194 is lack of SHSHs. However, going to 4.3 you shouldn't be getting that error bc it is the current signed fw. I have reason to believe you did not set your host file back to normal or TU is still pointing to Cydia's server.