Have you tried creating an Ad Hoc Network (in the WiFi menu)? If so, please send a list of the modules that refuse to update, so we can check them out. I know there is also a post about modules that will not install, and we are still looking into that.
Thank you. I tried this (ad hoc network, MacBook Air and iPad 2), but it did not solve the problem. I never had this problem with my home LAN using an Apple Airport. I did not have any issues with previous versions of iOS, Mac, or Accordance software with this particular feature.
On my iPhone 5S, I did upgrade my modules directly over the Wi-Fi network using update, performing it in batches. When I had three left, I tried synching with desktop Mac, and it again failed.
The modules are IVP-Pocket Dictionaries, BDAG, NA28 Crossrefs, GNT-T Notes, NETS2 Notes, Catholic Study Bible, ESV Notes, BHS Guide, Catholic Code of Canon Law in English, Pratico-Van Pelt Hebrew, and Four Views of Baptism
NB: I seem to recall that Concise DCH flashed on the screen the first time I attempted this task, and it did update.