I Broke Busybox

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http://androidforums.com – All right. I was trying to install V6 Supercharger after updating my ROM to 2.13 Rooted. Something went wrong and busybox is a goner. SU asks to update it, but can't. TB asks to update it, but can't. TWRP can't restore my last nandroid (when I try to the console says some nonsense about a simulated action). So, I need busybox, folks. Where should I get it and how do I install it? (You'd think I'd know these things by now) Thanks! (General)