Apple has recently released the iOS 11 public beta version for those who wanted to try out the it’s recent operating system offering. These beta updates are released only to provide the feel of the operating system and to receive inputs from it’s developer and general public. These updates are often buggy and may have security flaws so update on your own risks.
Some users are reporting Wifi and stability issues. So before upgrading to iOS 10.3.3 it is advised to take backup as if you want to downgrade you may end up losing your content. Steps to take backup using iCloud or iTunes. You will be able to downgrade to iOS 10.3.3 using the IPSW file that is available for public beta testers and developers. Here are the steps to downgrade.
Steps to downgrade from iOS 11 public beta to iOS 10.3.3
STEP 1 : You need to install the latest version of iTunes on your Windows PC or Mac. Download from this link.
STEP 2: You need to download iOS 10.3.3 IPSW file for your iOS device. Download from this link.
STEP 3: Launch the iTunes and connect your iPhone using USB and put it into recovery mode. You should be notified by iTunes that your iOS device is in recovery mode. If you are iPhone 7 user hold the power and volume down button until you see connect to iTunes logo. In case of lower model , hold down the power and home button continuously until you see connect to iTunes logo.
STEP 4: If you are Windows user press shift or Mac user click on options and click on restore option. They will ask to select file, you need to select the IPSW file that you saved and click restore.
STEP 5: It will verify the IPSW file and then install on your iOS device. You can then use backup to restore the content using iClouds or iTunes.