I have to send my old EVO with a cracked screen back to sprint because I've received my new insurance replacement. I first unrooted using the old method but then after reading a little more realized that sprint will still detect the hboot s-off. So i reflashed a recovery and then tried to run the hboot s-on script offered in the "rooting for dummies" thread. It then told me that it cant run because of "radio' issues. No keep in my mind i still have the stock ruu loaded that was flashed when unrooting the old way. Will flashing a custom rom update my radio allowing me to run the S-on tool and then after thats done flash the evo with the stock ruu pc36 file?