If the baseband is upgraded you are screwed until 4.2, where it is likely another unlock will be made. Apple will not unlock it and it is not possible for any 3rd party company to do so. There are ways to upgrade to 4.1 without baseband update but once it is done it is non reversible.
edit: i should note 4.2 is coming out in November, no specified date though.
Last edited by silentsim; 10-23-2010 at 07:13 AM.
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