Why there is an error while installing the software update?

marise7 Said:

"Why there is an error while installing the software update?"

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A. Disable Cellular:

It will not update with cellular enabled. So, if Cellular is enabled, disable it, then proceed with the update.

B. Update an iPhone:

Update your iPhone using:

• the iPhone itself
• a Mac, or
• a PC, even.

How to do so....

Two Major Steps: - Backup then Update

1. Backup First: Make a backup of your device using iCloud or your computer

2. Then, Update Using these Links:

• On the iPhone itself: Update your iPhone, iPad, or iPod touch - Apple Support
• From a Mac: Update software on iOS devices in iTunes on Mac - Apple Support
• From a PC: Update software on iOS and iPadOS devices in iTunes on PC - Apple Support