Can we use the latest upgrade image to upgrade the three generation old DSS?, We got verion 1.2 at the moment, what should we take care before the upgrade. Or should I do step by step upgrading to next higher version till I reach the latest version? I would appreciate help on this...
Yes you can upgrade to the latest. Please read the release notes for DSS 5.0_46. If possible I would recommend using the CD-ROM update from ISO image then going forward you will be ok to do by the GUI.