There's an app called reprosion that I've used in the past that can do the signing on your iOS device and even automate it. (I used it to load a semi-tethered j

There's an app called reprosion that I've used in the past that can do the signing on your iOS device and even automate it. (I used it to load a semi-tethered jailbreak) The limit is 7 days. The app itself doesn't have to be reinstalled, just the signing cert. I am very excited for sideloading to get implemented in the EEA, since that'll make this much easier.