The first comment is that to install iOS 8 is to have a support team with the same:
iPhone 5s
iPhone 5c
iPhone 5
iPhone 4s
iPod Touch 5Gen
iPad 2 or higher.
Then only we will need to do a UDID developer, or what is the same as the identifier of our phone is recognized by Apple as a developer with access to install a beta version of its operating system.
Once we buy it and tell us nuestor UDID, is active, and can install the BETA.
The procedure is very simple:
Download iOS Beta 8 corresponding to your device.
iPhone:
iPhone:
iPhone 5s (Model A1453, A1533) - LINK
iPhone 5s (Model A1457, A1518, A1528, A1530) - LINK
iPhone 5c (Model A1456, A1532) - LINK
iPhone 5c (Model A1507, A1516, A1526, A1529) - LINK
iPhone 5 (Model A1428) - LINK
iPhone 5 (Model A1429) - LINK
iPhone 4s - LINK
iPod Touch 5G - LINK
iPad:
Download here the image for all models of iPad
Connect your device to iTunes.
Go to our iOS device in iTunes and select "Restore" while holding the Option (Alt) or Shift in tight Windows. In the dialog box that opens select the package. Ipsw firmware with which we have previously downloaded.
Wait for the process to complete and you will have iOS8