There is not one ROM listed for the
X5 @
http://pocketpccentral.net/software/upsoft.htm.
There is obviously some confusion going on here. Are you sure you are talking about the
X5 and not the X5
0?
The last ROM update that Dell released for the
X5 was for
WM2003, not
SE. The official release can still be had by securing a CD, but determined people can still find the ROM elsewhere on the web.