I continue to get this message on my existing C8 Pro. I have been attempting to update to the latest version since early December, but each time I get this message. I had thought perhaps it was an issue with the FTP site, but I purchased another C8Pro for my vacation home and had no problems updating.
I have also tried the "soft reset" procedure that was described on this forum from a couple of years ago but that didn't work.
PING www.google.com (142.250.191.100): 56 data bytes
64 bytes from 142.250.191.100: seq=0 ttl=117 time=17.978 ms
64 bytes from 142.250.191.100: seq=1 ttl=117 time=17.140 ms
64 bytes from 142.250.191.100: seq=2 ttl=117 time=11.378 ms
--- www.google.com ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max = 11.378/15.498/17.978 ms
Yup - making the change seems to force a renegotiation of the connection...not 100% sure, but it resolves this type of issue most of the time. Happy camping.