While installing an Astaro gateway we ran into some problems; it would not update itself to the latest firmware. The update proceeded well to a point, but then it just stopped. The system was stuck trying to update from version 7.202 to 7.300. After trying to use the built-in mechanisms for dealing with this (for about 3 hours) I finally googled it and came to a forum page that explains how to fix the Astaro 7.202 firmware upgrade to 7.300 problem.
/sbin/auisys.plx –rpmargs –force(I'm not sure the –force was necessary)