this video explains how you can reset smart of seagate drives ( including seagate produces samsung and maxtor disks that model number starts with ST /STM )
!!! This Is Not Drive Refurbish Process. Only use with your disk. Don't sell any resetted disk that have reallocated sectors.
!!! BACKUP ALL DATA BEFORE STARTING !!!
pinouts : http://atola.com/products/insight/manual/serial-port-connection.html
About quick rising seek error rate : http://sgros.blogspot.com.tr/2013/01/seagate-disk-smart-values.html