Browser in Nerves (kiosk-mode)

I can successfully build kiosk for rpi3.
Ubunut 20.04 LTS.

asdf install erlang 22.3.4.6
asdf global erlang 22.3.4.6
asdf install elixir 1.11.4-otp-22
asdf global elixir 1.11.4-otp-22
mix local.rebar
mix local.hex
mix archive.install hex nerves_bootstrap

create a project with mix nerves.new and to export MIX_TARGET=rpi3.

diff --git a/mix.exs b/mix.exs
index d8481f7..7bd212d 100644
--- a/mix.exs
+++ b/mix.exs
@@ -45,15 +45,7 @@ defmodule Kiosk.MixProject do
       # bumps to Nerves systems. Since these include Linux kernel and Erlang
       # version updates, please review their release notes in case
       # changes to your application are needed.
-      {:nerves_system_rpi, "~> 1.17", runtime: false, targets: :rpi},
-      {:nerves_system_rpi0, "~> 1.17", runtime: false, targets: :rpi0},
-      {:nerves_system_rpi2, "~> 1.17", runtime: false, targets: :rpi2},
-      {:nerves_system_rpi3, "~> 1.17", runtime: false, targets: :rpi3},
-      {:nerves_system_rpi3a, "~> 1.17", runtime: false, targets: :rpi3a},
-      {:nerves_system_rpi4, "~> 1.17", runtime: false, targets: :rpi4},
-      {:nerves_system_bbb, "~> 2.12", runtime: false, targets: :bbb},
-      {:nerves_system_osd32mp1, "~> 0.8", runtime: false, targets: :osd32mp1},
-      {:nerves_system_x86_64, "~> 1.17", runtime: false, targets: :x86_64}
+      {:kiosk_system_rpi3, "~> 1.0"}
     ]
   end
mix deps.update --all
mix firmware
mix firmware.burn

EDIT: hangs at boot :frowning: