Ya --- calls are still "failing" after the update. I've never messed with phones loading different operating systems.

Thanks for the tip on trying Mobian. I'll give it a shot.

Thanks --- I'm running the update it looks like it's updating. I need to go do some things, but I'll check back in, in a few hours.

Are phone calls not working in general, or is there a fix I need to apply?

I tried sudo apt update && sudo apt upgrade and it is telling me that updating in this way is insecure. "'http://repo.ubports.com xenial_-edge-_mesa Release' does not have a release file."