Cannot Install Required Update for my iPhone with iOS 26.1

“Cannot Install Required Update for my iPhone with iOS 26.1: […]It is Catalina that needs the new iOS components and hence am not able to obtain them for install. Is there a link where I can manually download the install software?”

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Getting iPhone Update Files through a Mac:

IMPORTANT: Do NOT download them from any other source, as it may be a scam of sorts).

First…

Back Up your iPhone: Be certain to backup your iPhone, prior to transferring data. That way, you will have something to restore your iPhone from should anything go wrong after the transfer.

Then…

Download and Use Apple Configurator for Mac. Save the file to iCloud, or access to from the Downloads, and access it from there.

Source: Update devices using Apple Configurator for Mac - Apple Support

"Cannot Install Required Update for my iPhone with iOS 26.1: After the 26.1 update on my iPhone SE, every time I plug in my iPhone to download photos I get this on my Catalina Mac...If I press 'Install' I then get this...How can I install the update? This 'Network Problem' has been going on all day. Thanks in advance."

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Thank you for the screenshot.

Issues Updating an iPhone:

Obviously, it is a network error. So,...

A. Important: Backup First: Be certain to backup your iPhone, prior to transferring data. That way, you will have something to restore your iPhone from should anything go wrong after the transfer.

B. Force Restart your iPhone:

Start with a Free Restart. Go here: Force Restart iPhone - Apple Support

C. Turn Off ALL VPNs:

Are you using any VPN(s), here? If so, turn it/them off.

D. Restart your Router:

Power off your router and modem for 30 seconds, and then power them back on. The connection may need to refresh, id DHCP is being used.

E. Update to iOS26.1, this Time Through a Computer:

iOS 26.1 is the most-recent available iOS version for the iPhone 12. So, try upgrading to it. You can do so directly on the iPhone itself; through a computer; or even the Cellular (if an iPhone 12 with 5G being available to you). Turnoff any and ALL VPNs on your devices.

Use my User Tips:

• Computer: Update your iPhone Using a Computer - User Tp
• Cellular: Use an iPhone 12 or later, that is using 5G, in order to update over Cellular - User Tip