Anyone who was affected should connect to i Tunes to complete the update or contact Apple Care for help.
i OS 10 has just dropped but it seems like it is not smooth sailing for everyone.
We experienced a brief issue with the software update process, affecting a small number of users during the first hour of availability.
The problem was quickly resolved and we apologize to those customers.
Stick with the discussion that you have already started here. my i Phone 6 more updates to ios 10.0.1 but the bar progress stuck at 99% for more than 6 hours...