Now SYNESIS is provided with the new feature, one stop upgrade feature which enable  to upgrade from former version (V3.5/4.0/4.5) to the latest version (V5.0) directly, though it it needed  to upgrade one major version to another. (V3.5 -> 4,0-> 4.5 and finally to V5.0)

 

Please visit V5.0 Release information for more details.