I've tried this in safe mode with NiC support as well..
Trying to update my GPU
WTF? kek
Are you trying to update through Radeon Software or downloading the driver package directly from AMD? I would try the latter option if you keep encountering the error. Unless there is a problem with your NIC or its driver than I wouldn't know how to troubleshoot the actual installer software.
You could also make sure that you're Firewall or AV software isn't blocking access.
I formatted.. re-Installed.. Problem solved!
All my important stuff is on an alt drives.
It is faster to re-INSTALL than wait for answers or mess with it forever.
Newest ver. of Radeon RX 570 went on fine with clean fdisk/format and right after MB drivers first.
Motherboard > Video
Point being.. They'll work out the bugs by the time I need to update things again and this err will be a moot point!
Ya think? kek