Today I released the Setup.App Patch for iPhone 5S, iPhone 6 and iPhone 6S (and 6S Plus) for CFW iCloud Bypass on iOS 10 Beta 5. Yesterday I created a tutorial on how to fully bypass iPhone 5 running iOS 10 Beta 4 or 5 in which I detailed the whole CFW creation method that you need to follow on iPhone 6S, 5S and 6 as well. The only thing that changes is the Setup.App Patch (use the one from this description) and the IPSW for iOS 10 (you need the x64 one).
You still need a mac for iOS 10 Beta restore due to Apple's limitations.
The full tutorial can be seen here: https://www.youtube.com/watch?v=dDU597ZJy1s
I recommend you to watch the full video and to read the F.A.Q. and the description of the tutorial video to prevent issues or device bricking. If you have questions, drop them in the comments section.
You can calculate the OS VAR Sizes automatically using Firmware Manager X.
The Setup Patch: https://mega.nz/#!o50TzDSL!5IUr4K8tdRFzDLW52qz3ewxNn3fVgyQiuphJRqZ5260