The iPhone could not be updated. An unknown error occurred (1109). 06B4.0000
Historically, I used iTunes to update my phones (I've owned several over the years). Recently I was prompted to use Apple Devices (Windows) instead of iTunes, and this worked through several iterations. However, last Saturday I boldly went through the process to update to 18.6 on my iPhone 14 and it failed, with the above message. I then went through a several hour process first trying the update again, and then going through the restore process, restoring my backup (about 50 GB), then to restore my Authenticators from iCloud, and then through Microsoft support as my Exchange MFA wouldn't restore that way, and I couldn't get back into Exchange (online - I am the administrator). In all, almost 5 hours to update and get my phone back. As a test, I updated an older phone (SE 2020) through Apple Devices, and it failed with the identical error message. As it had very little data, the restore process was much faster but still a royal pain...
Well, today my phone indicated that a new update (18.6.1) was available. This time, I tried my SE 2020 first. Same result (The iPhone could not be updated. An unknown error occurred...
I am a Windows desktop and system administrator. Just to be sure I've checked, and my Windows 11 system is completely up to date. Just prior to running the update, I ran a disk scan and an sfc (no corruption found in either test). And, before running it I shut down my security software. Other than a few Hyper-V related messages, there were no errors nor warnings during the relevent period in the system log (Event Viewer).
I have to believe that there's a bug in Apple Devices.
iPhone 14, iOS 18
