Sorry for the late reply, Jon – only now (at 3AM :-|) got the leisure to respond appropriately.
Yep, it does! I just tested my D3AA-modded adapter on my TS10 and was able to read and write its firmware with no issues.
So, I also happen to have, in the past, bought an original @gchart adapter – but it does not look much like yours (see the pics here). Mine was 5.0V (as I measured, see the same link above further on) and if I hadn’t left it back in Chile, I’m pretty sure it would have saved me from all this modding rigmarole (but then, hindsight is always 20/20).
Anyway, I suggest you measure yours (using a voltmeter or DMM between pins “+” and “-” with it connected to a USB port) and if it’s 5V indeed, it should have worked with your D3AA with no modding needed. Perhaps something else is amiss? I remember your programming environment isn’t exactly standard (you using a Macintosh or something IIRC) so you might want to double-check these other points.
I hope this helps, and please let me know if I can be of further service.