Help flashing a rooted Razr Maxx

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http://androidforums.com – I got my Razr Maxx rooted (BW_version.6.12.211.Spyder.deodex) and I took it to a cell phone store and they wouldn't able to flash it over to cricket. I took it to the cricket store and they told me that the com ports don't come up on their flashing drivers. Can someone help me please? Thanks, Mike (General)