Today I tried updating a full-size Congo console from 4.2.0 to 4.2.1, using a "Memorex Traveldrive" USB memory stick, and had no luck following the normal update procedure because the "Software Update" button was greyed out.
[edited by: Alex Mair at 9:44 PM (GMT -6) on Tue, Mar 13 2007] [edited by: Alex Mair at 9:43 PM (GMT -6) on Tue, Mar 13 2007] [edited by: Alex Mair at 9:42 PM (GMT -6) on Tue, Mar 13 2007]