fortunately, since you're on an iphone 4, you can use ifaith and dump your shsh blobs which'll allow you to restore/downgrade back to iOS 5.0 if you do not like iOS 6.1.3no SHSHs were listed when i plugged into tiny umbrella. It says it saved one for 6.1.3
does this mean that I will not be able to go back to ios5 if I want to?