Hi I tried to follow the direction to use umbrella to back up the SHSH for my iPhone 4 and 3gs. But then when I open the program, it said that I don't have the EXEJAVA setup to my JRE? Any idea on what I need to do to resolve this? I am using a system with Windows 7 64 bit. I used to be able to backup SHSH with XP but I don't have the system anymore. Thank you very much for any help.