The system update process sucks. I cannot get any more of my primary servers to update to 10.2 using system update. ARE THERE ANY MANUAL UPDATE PROGRAMS I CAN RUN DIRECTLY ON THE PRIMARY SERVERS?

I updated the first primary server and one other primary server now I cannot do anymore for some reason. The process has been stuck in "in Progress" status for more that 24 hours, and the whole process of updates has been taking since Friday of last week.