I finally tried the update this morning.
Followed instructions, backed everything up.
I am on Win 10 (updated from Win 8), custom home built PC, using a 3rd party usb cable with lighted ends, going into a firefly (for jitters) and into a USB 3.0 port on the back of my PC. Same port I always use.
The update took about 25 minutes including Native, and restoring my backups. Everything seems to have updated without a problem. Loads as 2.80, has new amp models, and so does Native. Has my presets too!
Thanks L6!