During a recent trip into windows-land, I noticed that Lenovo posted a firmware update for the c630. I downloaded and installed that, leaving my machine running 2.06. There don't appear to be any new menu options, and no description of the changes were available.
I'm happy to run any diagnostic tooling for anyone that can't but is interested, if that information would be helpful to the cause.
aarch64-laptops@lists.linaro.org