You are in the milestone forum. Check out on the Droid forum. You need alltel specific radio files for 3g to work. The sbf you flashed does not have that. Its a generic sbf. If you are willing to manually do it, I can give you instructions. You can also check on howardforums. Let me know.
Update: I have attached the procedure. Good luck. This was taken from HowardForums. Follow all steps including flashing sbf.
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Last edited by sileshnair; 29th June 2011 at 05:10 AM.