iOS 12.4.4 update keeps getting corrupted
I plugged my iPhone 5S (currently at 12.4.3) into my iMac (Mojave 10.14.6, 24GB 2TB) and fired up iTunes ... at which point iTunes reported that an iOS update - 12.4.4 - is available for my iPhone.
I went ahead with the Download and Update process. I've done this several times today (after shutting down iTunes and disconnecting the phone a few times) and each time the progress bar shows the file (around 2.4GB) being downloaded and then I get an error message.
This is absurd ... it has happened each and every time the software update has been downloaded.
What next?
iPhone 5s