@Eckart Thanks for your reply. By patch framework, you mean with only the exe file replaced right ? I replace the all framework file, and it work as I explain, 32bits apps, sync and backup OK, restore also, but need to refuse the update of framework everytime I plug idevices with a cable.

Hi everyone, So, I made a few tests, and I would like to share this with you. So, after replace the new framework by a old one, my FCPX issue is solved. Now, I just sync my iDevices normaly, just ignore the framework upgrade proposed by iTunes everytime I plug iDevices on iTunes. It seems to work.

@Eckart Thank you for your reply. But, can you restore a iOS device ? Or iTunes keeps to ask the framework update ?

@ Eckart: You mean that you can sync your iPhone with iTunes, and at the same time you fix the 32bits issue ? I have the same issue with this damit mobiledevice.framework, and I was unable to export my projects from FCPX. I restore a old mobiledevice.framework (all one) from a TM backup, now i can export from FCPX, can backup and sync my iPhone and iPad on 14.0.1, but I can’t restore my iOS devices. As soon as i plug the iOS devices with a cable to iTunes, it ask me to upgrade the mobiledevices.framework.