You don’t need the help of PC to go through the process of downloading the latest iOS version on iPhone. All you need to do is download the iOS 11 beta profile on your device and then install it just like any other software update.
How to Download and Install iOS 11 Beta without Developer Account
Note: As iOS 11 is still in beta, We suggest you download it on your secondary device. You may often encounter bugs like fast battery drain, app crashing, etc.
Step #1. Launch Safari on your iOS device. Then, go to https://beta.applebetas.co/
Step #2. Tap on Download Button under iOS Downloads.
Step #3. Now, you need to download the “iOS Beta Software Profile.” Tap on Install → Enter your iPhone Passcode.
Step #4. Tap on Install from the top-right corner → Tap on Install again in Popup.
Step #5. Tap on Restart.
Step #5. After your iOS device has rebooted, launch Settings app on your device → Tap on General.
Step #6. Tap on Software Update.
On the next screen, you should see the iOS 11 developer beta profile.
Note: at times, the beta profile may take some time to appear. Hence, make sure to wait for it. Just in case, it doesn’t show up, you need to reboot your device.
Now, download and install the iOS 11 beta as usual.
Here’s a guide on how to uninstall iOS 11.