My 8330 GPS works with BBMaps. The GPS chip in this device is weak plus I believe VZW makes you pay to use any other GPS program on this device. Have not tried leaked OS.
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You are correct that the internal GPS works with BBMaps. The GPS chip is not weak or defective, it just operates in Assisted GPS mode, which means Verizon can enable or disable it on an app-by-app basis. I have read that they have also enabled it for Bing, but I can't check that. The GPS in the Storm and Tour operate in Autonomous GPS mode and are not blocked by Verizon.