Abstract: The invention relates to a method implemented by a first device (DV1) cooperating with a cloud (CL) of at least one server for resolving a synchronization conflict over different versions of a document object comprising at least one content file and one object descriptor file (ODF1). The method comprising obtaining a first version of the document object; performing a first synchronization phase comprising sending the first version (ODF1) of the object descriptor file, independently of the first version of the content file, to the cloud (CL); performing a second synchronization phase for resolving the conflict by re-sending the first version (ODF1) of the object descriptor file of the first device (DV1) to the cloud (CL); performing a third synchronization phase subsequent to the second synchronization phase, comprising sending the first version of the content file to the cloud (CL) for storing said first version of content file.