Difference between X50v and x51v?

[daman316]

I've read the specs on both of these and can only see updated software and a MMC slot as the difference between the two. Can someone enlighten me on some other key differences between the two. I just bought a X50v and am wondering what i am missing out on.

[AnswerDude]

x51v is running the lateset Windows Mobile 5.0 OS while x50v is running Windows Mobile 2003 Second Edition (you can upgrade x50v to wm 5.0). And x51v has 256MB of ROM while x50v has 128MB of ROM.