i'm not sure if anybody in this forum has done it but some ppl have upgraded their xbox to 128mb but it's sdram and not ddr. well they say they've gotten all roms to unzip successfully but the games won't start. any1 have any feedback on y they think this won't work, whether it be the ram or mame-x. btw they used samsung K4D263238M-QC50 and K4D263238D-QC50. if any1 has successfully upgraded their ram wat model did u use and will it effect xbox live?