Update only existent files

Hello. I have a partially streamed application which updates itself using wyUpdate control, however because it has large base of assets they are downloaded from server as they are demanded (plainly from WWW). Would it be possible to somehow use wyUpdate to update those as well (if exist in application)?

Say app downloaded Asset1.ext, Asset2.ext but not Asset3.ext and Asset4.ext. Now if on server I update Asset1 or Asset2 it would update these in application, but if i update either Asset3 or Asset4 on server then there's no need for application to download updates for them as full most recent version will be downloaded once demanded.

Would it be conceptually possible with wyUpdate? Note that number of assets can raise up to several hundreds.

Thanks alot for reply.

Would it be conceptually possible with wyUpdate?

Yes, but the way you design it depends on several things. For starters, will all your users be downloading these assets? That is, are they a requirement for your app to run, or are they optional components?