I haven't had any issues with connecting my Note 5 using Smart Switch. It's faster then Kies was with backing up your phone. I didn't know why your having issues. Try calling Samsung support and they should help you.
Posted Via The AT&T Note 5
I'm glad you were able to back up your phone and I'm surprised it took so long. My phone backs up in less then 5 min
Verizon customers are reporting a lot of issues with the update. I think I'll wait until I get a new phone. I'm getting 14--16 hours battery time with Package Disabler Pro (moderate use) and everything is running smoothly on Lollipop.
Posted via the Android Central App
Do yourselves a favor....do a Full Factory Reset after any major upgrade, just IMHO!