Ok so I have been out of the loop with ddwrt for a bit. I have a 54gs with ddwrt version 15 or 16 on it (not sure). Anyway to upgrade must I flash to 23 then to 23 sp1? or can I go right to sp1? If it is the former should I flash to 23 generic, 23 gs, 23sp1 generic, and then 23sp1 gs?