Yep ... with the caveat that he:
- turn off passcode lock
- turn on airplane mode
- turn off find my iPhone
I only point that out because I did mine on a PC, and it was so strange, I turned on airplane mode and turned off the passcode lock but forgot to turn off my find my phone, and be it a bug or a known issue, it did a full restore and I couldn't stop it in time. Weird. Did it over again with the above 3 steps, no issues on 2 iPhone 6s. LOL