This Eris is rooted, with KaosFroyo v37 and Pirelli Z-rated tires. It's fast, stable, functional - everything I'd hoped. I have a nandroid save of the unit on v34, which I'd like to keep - just in case. If I do a nandroid backup, of v37, will it write over v34? I have mybackup pro and Titanium free. This Eris isn't used for music or video, so memory is far from used up. Given these conditions and resources, and considering my ignorance, what's my best backup strategy? THANKS!