C8Pro
Currently on 2.4.1.176
Attempting 2.4.3.158
Attempted several times that failed.
Rebooted.
Attempted now many times.
Download gets to 35-55% and then verifies, and fails.
The download is very slow percentage is just creeping up.
Neywork seems to do everything it has been doing, no noticable lag.
Any hel0 would be appreciated.
I did try a search of posts, but I was not even close.
Please provide your hub model (C7, C8, etc.) and its platform version from Settings>Hub Details.
Check out the following post for help troubleshooting problems and gathering details that will help others to identify and solve the problem you are experiencing: ‼ READ FIRST - Before Posting in Get Help
Chances are, you did this once before in the past.
Auto-negotiate is the default (as demonstrated by your screenshot).
I’m not sure if anyone knows why flipping it back and forth (in either direction) solves this rare firmware update quirk, but it’s been well-described for a few years.
The theory I've heard is that changing it forces a connection renegotiation between the hub and the switch/router, which clears up whatever issue(s) had mucked up the connection. Could also be that it calls a leprechaun network engineer who fixes it with magic from the ethernet.
I came looking for a solution to my firmware not updating and found this as well. I haven't had issues in the past and haven't needed to change the link speed. Did a recent firmware flip this accidentally?
I've forever always had mine set to Auto/default, and I've never had a need to change it (knock on wood). I've also never had it change on its own for any reason (due to firmware or otherwise).
I'm fairly certain I wouldn't have changed it to 100 Full, but it's been too long since it was configured as such. The fact that the device was updating firmware without issue until recently says something changed in a recent update.
Could also be that it calls a leprechaun network engineer who fixes it with magic from the ethernet. 
