Yeah, the 3.1 minus baseband 'update' might be the way to go.
Might as well wait for the full 3.1 hack though - I think you're right about it not taking them too long

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MY99 WRX (Sold)
MY06 WRX 241hp 430nm atw (Sold)
MY09 BMW 135i 247kw atw (Current)