Dell has released new ROMs for the Axim X51v (ROM A06)and the Axim X51, ie the QVGA 520MHz and/or 416MHz versions (ROM A05).
Both updates list the Windows Mobile V5.0 Adaptation Kit Update 1.1 Enhancement as the only change.
Note: This System Update is only for Axim X51/X51v. IT IS NOT for Axim X50/X50v systems with Windows Mobile version 5.0 upgrade.