Ok, I'm totally new to all this rooting and flashing custom kernels and all that, but I'm doing pretty well with it. I just don't fully understand all the bits and pieces yet. Yesterday, I loaded JoeyKrim's 0.5 custom kernel, and I had a lot of trouble getting it to work with a custom theme. I want to load his 2.0 kernel today, and I want to try a theme again, but my question is about reverting if I screw the phone up. I went into Recovery 3.0.8 and I backed up my system and my data. If I screw the phone up badly, can I just go in there and restore both of those and be back where I was? Seems to make sense to me, but I just want to be sure.