Just an FYI for everyone. I found this one day when I was flashing with Bootstrap and messed something up. I was at work and it was about time to leave so I figured I would just fastboot when I got home. I got home and had my phone in Fasboot and plugged in the usb. Turns out my batt was too low to do anything. I was up till 3am trying to find out how to fix it and came across a thread on xda. It was instructions on how to make a dev cable which would let you flash even on low batt. You need to be able to solder but after following directions, soldering the wire in place and covering it all up with electrical tape, I had a working dev cable and was able to save my Razr! I was so happy I didn't have to call in for a warranty replacement and wait a day without a phone. I apologize in advance if I should be posting this somewhere else (figured this would be a good spot since everyone here is a crack flasher). Heres the link,
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Not sure if theres an issue posting links but if there is I'm it will be removed and I apologize for that too. Hope this helps anyone that finds themselves in a similar situation.
P.S. If the link does get taken down, just google "make your own motorola factory cable". It should be the 2nd on the list but the 1st one works too.