My iPhone 6 can't finish updating to iOS 14

MelectricA Said:

"I have an iPhone 6s and upon attempting to download and install version 14 it states that an error had occurred just before it’s supposed to finish downloading."

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Why the Error?: There is an issue connecting to Apple's servers.

To Check for Updates:

Use a Computer and Ethernet:

Start with attempting an update through use of a computer. If you cannot use Wi-Fi, then use Ethernet.  Go Here: Update your iPhone Using a Computer - User Tip. On the computer, you would connect it through Ethernet, going directly into your router. For a Mac (or PC) that does not have Ethernet, this would be the adapter to use: Belkin USB-C to Gigabit Ethernet Adapter - Apple. If you get the same error, the model is likely just not compatible.

If it is giving you a failure to download message just prior to downloading that will not be a server connection issue, you would have had that when you started. How much free space due you have on your iPhone?