We recently wrote how you will need to wait at the very least a few weeks until you get your hands on the Public Beta or the need for having a developer account handy. If you do not have a developer account, then the only option for you is to then enroll for one, which costs about $99 for one year and then get the iOS 10 running on your device. With iOS 10 being a major update announced at WWDC 2016 and probably the most groundbreaking one right since iOS 7, we can understand that it is a long wait if you want to experience it right here, right now.
So as long as you have an iPhone, that is iPhone 5 and beyond, we have a solution for you, using which, you will be able to install iOS 10 on your device without any need for a developer account. Make sure that you are near a charging point and have Wi-Fi connectivity when you attempt to update. Also, do take a backup of your iPhone on your PC or Mac so that in case things go bad, you can always put your phone in DFU mode and revert to the stable iOS version.
Once you have taken the backup, simply follow the steps below for installing iOS 10 on your iPhone.
On your iPhone, you need to launch Safari (this method will not work with any other browser) and push to this link. Here you will find a file, which is the Developer profile that needs to be installed on your iPhone. There is always a possibility that the link expires or Dropbox decides to delete it since the incoming traffic on it would be too high, you can refer to this thread on Reddit to ensure you get the developer profile installed on your iPhone.
When you reach the file, you will need to download it on your iPhone. The moment the file has downloaded on your iPhone, you will get a prompt of a new user profile being installed. You will have to input the security code on your iPhone for the same. Input your passcode and you will see the phone restart post successful installation.
Once your iPhone has started again, and the profile is installed, you need to go to the ‘Settings’ app. In the app, under ‘General’ you need to look for the ‘Software Update’ option. In there, you will see that the phone has an update waiting for you for iOS 10. Begin the download after you have accepted the terms and conditions from Apple.
From here on, you will have to follow the same steps as you would if you were installing an update from Apple. In order to roll back to iOS 9, you need to put your phone in DFU mode and connect it to iTunes for it to restore. Your phone will be clean wiped when you go from iOS 10 to iOS 9.