Removing iOS beta

LouieLingahan Said:

"IOS BETAGood day! if i removed the ios beta that i've installed in my iphone 3 days ago, it will also erase my files? photos? contacts? and other apps? thank you"

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Perform as Instructed Here: How to uninstall iOS beta software - Apple Support

LouieLingahan Said:

"in backup method, using my computer, can i use other brand of laptop like DELL?"

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Yes. Use iTunes:

As Mentioned here: Restore your device from a backup on your computer

"On a Mac with macOS Catalina 10.15, open Finder. On a Mac with macOS Mojave 10.14 or earlier, or on a PC, open iTunes"

So, using your DELL PC, Use iTunes.

"LouieLingahan Said: if i follow the instruction in "Remove the developer beta by restoring your device" it will not erase my files? photos? account or other apps?"

Yes - unless you back it up using an external location (i.e. iCloud storage). You would go into enable Photos on iCloud - then export them all to iCloud, by enabling Photos. So, just make a list of you current apps, seeing if you can find them when you downgrade. Crating a backup of iOS 14 will will no restore to iOS13.

Or, just restore from a Backup, made from to this upgrade.

Yes.

You must have and use a backup made before you installed the beta. If you want to install and use the previous iOS, you cannot use a backup made with the beta.