Is the a BATCH process to update Libraries to 10.4?

I've backed up my Libraries, so now I would like to do a batch update to FCPX 10.4 level.

Is there away to do this???

Thanks in advance,

No, but you could select multiple libraries for opening at once from the Finder? If they are big libraries I’d keep the numbers low.

Personally I’d just upgrade them as needed - it’s fast so there’s no real benefit to doing them in advance of needing them in my view.

Ian.

Yes, Ian is right, very fast, no need for a batch update in my experience.