Hi there, I'm pretty new to this subject and I'm not really satisfied with my current Sony Xperia T. Well it's a great phone actually but I'm getting pretty frustrated not getting any Android update later than 4.1.2... So these are the things I want to get: 1. Get a newer version of Android, or if the whole point of rooting is to make the OS lighter/efficient: a better (and still more recent) version. 2. Upgrading the microSD-limit to 64GB SDXC if possible (is that software-related, like file format?) 3. All kinds of fun stuff, making sure I look in the safe content. And to finish: I have tried rooting from a low-end laptop and it didn't work, it seemed like the OS of Android wasn't compatible or something... I might try it again on my high-end gaming desktop, even though it's highly unlikely to make a difference then :/. Thanks in advance!