Whats the best way to upgrade without losing my data(apps/messages etc). I've just straight flashed over previous versions of the rom before and found it entirely unstable. Lately i've been using SPRecovery to backup my data, then do a clear cache/data 3 times(i've heard this number somewhere) and then restore my data. It doesn't seem to run aswell when I do that though as apposed to just redownloading and installing all my apps and discarding the rest of my data. tl;dr how2upgrade?