When I first installed avant antitheft, my phone was rooted. (It’s a Galaxy S3 on Jellybean 4.1, T-Mobile) I later decided to unroot my phone and I did so without first uninstalling the antitheft app. So when I went to uninstall it later, it wouldn’t allow me to do so like it normally would. It gave me an update zip on my sd card and told me to flash it in recovery mode using rom manager. So should I reroot my phone and try this or is that even possible? What exactly should I do to avoid screwing things up even more?