If you wish a NC update for your XXL Classic Series (64 MB), only the NC 9.510 who offered by TT (*). NC 9.540 only for some 4 GB-devices of the XL/XXL, device identifier GV or RZ. I honor your eagerness, but you will not notice any difference after replace the 9.465 with 9.510.
(*) Exception: Your XXL has 4 GB and you want a Truck NC