TinyUmbrella, the application that allows you to save the SHSH of your device from your Windows or Mac computer has just been updated to version 5.00.01 adding support for iOS 5b2.
It is important that all you use it, remember that it is used for save the SHSH and that these can be used for future jailbreaks or downgrades, you have all the information about SHSH here.
You can download it here:
NOTE: Remember to uncheck the option «Request SHSH from Cydia»In the Settings if you get an error.
NOTE 2: You can install iOS 5b2 legally here.
I have followed these instructions and it keeps giving me the same error 3194