How to install/Update to ios 8.1.1 beta:
Step 1: You must be a part of Apple Developer Program to install and activate your iPhone,iPad,iPod in ios 8.1.1 / any ios beta version. So if your device is not registered to an Apple Developer Account, then register it right now. Click here to register your iPhone iPad iPod UDID to Apple Developer Program. It’s a must. Else if you don’t register your device udid to Apple Developer account then your device will not be activated in the ios 8.1.1 beta version. So register your device udid first.
Step 2: Download the ios 8.1.1 beta from our download section of the iAppleStuffs website. Direct download links are given for all the devices.
Step 3: Open up itunes & connect your iPhone and backup your data.
Step 4: Now hold the shift key [Windows] / option key [Mac] in your keyboard and click on RESTORE in itunes.
Step 5: now a window will popup, there select the ios 8.1.1 beta ipsw which you have downloaded from our website and click ok.
Step 6: Now let itunes do the rest work for you. it will update your device to the selected version.
Step 7: Now once the update process is finish. Your iPhone will be activated in ios 8.x.x beta as your device is registered to Apple Developer Account. If you have not registered to device to Apple Developer Account then you will stuck at Activation error, so don’t update to beta versions without registering your device udid to Apple Developer Account.
Step 8: Step up iPhone. And if you want to use all previous data the restore your backup data to your iPhone. but i will always recommend everyone to start everything fresh. You can always get back your contacts, data, pictures from iCloud so there is no need to restore to previous backup via itunes. Anyways its your wish. 🙂
Please see the video guideline on how to install the ios 8.1.1 beta version below: