Ketara Software

…Is much more painful than it could be. Be warned that not only will it wipe out your iPhone’s contents (since it simply overwrites an image from Apple on top of you previous OS with its settings), but you will also need to get new certificates and provisioning profiles in order to run your apps on the new OS.

Yes, yes, we know, Apple says that you should only install the seed strictly on developer iPhones. But what are small developers to do, buy five of them?