htplainf@asuslaptop:~$ ubuntu-device-flash -h
Usage:
  ubuntu-device-flash [OPTIONS] <core | query | touch>

Application Options:
      --revision=        revision to use, absolute or relative allowed
      --download-only    Only download.
      --server=          Use a different image server (https://system-image.ubuntu.com)
      --clean-cache      Cleans up cache with all downloaded bits
      --tls-skip-verify  Skip TLS certificate validation
  -v, --verbose          More messages will be printed out

Help Options:
  -h, --help             Show this help message

Available commands:
  core   Creates ubuntu core images
  query  Run queries against the image server
  touch  Flashes ubuntu touch images

htplainf@asuslaptop:~$ ubuntu-device-flash touch --device=razor --channel=ubuntu-touch/devel-proposed --revision=127
unknown flag `revision'