You don't request to get it unsecured after your next statement they will review the account and if you see your CL has changed you'll know it's unsecured you should expect a letter in the mail a few days later with a check for the amount you deposited. But from what I've seen 660-670 is what they usually graduate you're really close so maybe it'll go through. I definitely wouldn't apply for a new card with them though.
