will someone explain how the SHSH works?
I have my 4.2.1 for iphone 4 which finally uploaded to cydia after a few days. I still don't quite get what the point is though. I know it makes it so if I brick it I can restore it? or is that not right
does that mean I can restore my iphone right now to my backed up copy via itunes (unjailbroken), then install 4.3.... then wait however many days/weeks it takes for the new update to come out, and then jailbreak it again?
At what point does that SHSH help? is that if i jailbreak it, then try to update it without restoring it and then mess it up somehow?