[Q] Dual Booting On The Chacha?

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http://forum.xda-developers.com – Does anyone know how to get the Chacha dual booting? I'd love to dual boot adlx's CM7 and CM9 as well as stock :P I've already tried the app Boot Manager, which apparently works on the HTC Wildfire (Buzz) according to this thread. I couldn't get it to work however (whilst running CM7), I got the error "can't edit boot.img". I've read the log, but I'm really not clever enough to understand it haha :P I was hoping some developers could have a look as the original devs of the app seem to have gone off the surface of the earth :/ Is there any other way to dual boot? I've seen ot (HowTos)