@startuml

Actor "End User" as End_User
Participant "Tool Synchronyzing" as Tool_Synchronizing
Participant "Distribution Environment" as Distribution_Environment

End_User->Distribution_Environment : Download validation utility
End_User->Distribution_Environment : Sign the licence (accept the terms)
Distribution_Environment-->End_User : Send back the validation utility
Tool_Synchronizing->Distribution_Environment : Check for a new version
Tool_Synchronizing->Distribution_Environment : If new version found, ask end user if he wants to update
Tool_Synchronizing --> Distribution_Environment : Send back the validation utility

@enduml