Изменить /usr/share/android/emulator/build/tools/get-tarball-url.py
Измените
host_uri = "https://system-image.ubuntu.com"
json_index_uri = "/devel-proposed/mako/index.json"
на
host_uri = "https://system-image.ubuntu.com"
json_index_uri = "/ubuntu-touch/devel-proposed/mako/index.json"