SSHD are not properly supported in PC3000 and part of the repair process I use for Grenada SSHD a loader is required - unfortunately creation of a loader within PC3000 utility is impossible. Instead the overlays need to be manually loaded into an existing loader then saved to a new location.
This is a list of the Overlays (over system files):
3,100,0 - 00 overlay - 100.bin
3,101,0 - 01 overlay - 101.bin
3,103,0 - 04 overlay - 103.bin
3,104,0 - 05 overlay - 104.bin
0,20D,0 - CFW Overlay - 20D.bin (This is not available on all models)