Can't turn on after latest update (kernel), no response to touch input, USB keyboard not working

[FranklyFlawless]

@jjakob

I’m not sure if this is supposed to work or not, but regardless I can’t turn the phone on any more, how do I fix this?

1. Use Jumpdrive to access the phone using a computer as a host, decrypt LUKS, then backup any important files.
2. Reflash a Byzantium image.