I'm thinking about doing a semi-untethered jailbreak on my iphone4 5.1. I'm just wondering how stable is it? I'm not really looking to do themes and what not. I just want to be able to put my icons on the screen wherever I want on the screen and change the transition when I switch screens. Also do I have to do it on my home computer where my itunes is downloaded? could I have redsnow on both my home and work computer so I could tether boot if it fails at work?