diff --git a/updater-ng/release-ng.lua b/updater-ng/release-ng.lua
new file mode 100755
index 0000000..ac48161
--- /dev/null
+++ b/updater-ng/release-ng.lua
@@ -0,0 +1,115 @@
+#!/usr/bin/env lua
+
+local function ERR(msg) print(msg) end
+
+local ok, lfs = pcall(require, 'lfs')
+if not ok then
+	ERR('This script requires lfs, the Lua filesystem library')
+	os.exit(1)
+end
+
+local D3D_REPO_FIRMWARE_NAME = 'doodle3d-firmware'
+local D3D_REPO_CLIENT_NAME = 'doodle3d-client'
+local D3D_REPO_PRINT3D_NAME = 'print3d'
+
+local paths = {}
+
+local M = {}
+
+
+local function detectOpenWrtRoot()
+	local f = io.open('Makefile', 'r')
+	local line = f and f:read('*line')
+	local rv = (line and line:find('# Makefile for OpenWrt') == 1) and true or false
+
+	if f then f:close() end
+	return rv
+end
+
+-- returns uri (file path) of the wifibox feed, nil if not found or nil+msg on error
+-- recognized feed names are 'wifibox' and 'doodle3d' (case-insensitive)
+local function getWifiboxFeedRoot(feedsFile)
+	local typ, nam, uri = nil, nil, nil
+	local lineNo = 1
+	local f = io.open(feedsFile, 'r')
+
+	if not f then return nil, "could not open '" .. feedsFile .. '"' end
+
+	for line in f:lines() do
+		typ, nam, uri = line:match('^([^%s]+)%s+([^%s]+)%s+([^%s]+)$')
+
+		if not (typ and nam and uri) then
+			f:close()
+			return uri or nil, "could not parse line " .. feedsFile .. "#" .. lineNo
+		end
+
+		local commented = (typ:find('#') == 1)
+		if not commented and (nam:lower() == 'wifibox' or nam:lower() == 'doodle3d') then
+			break
+		else
+			typ, nam, uri = nil, nil, nil
+		end
+
+		lineNo = lineNo + 1
+	end
+
+	if uri and not (typ == 'src-link' or typ == 'src-cpy') then return nil, "d3d feed has wrong type '" .. typ .. "', use 'src-link' or 'src-cpy'" end
+
+	f:close()
+	return uri
+end
+
+-- TODO: pass table to functions to fill in? if they all return either true or nil+msg, that could be used for display of ok/msg
+-- returns true on success, false on error, and displays meaningful messages
+--local function runCheck(msg, processFunc)
+--	io.stdout:write(msg .. "... ")
+--	return processFunc(--[[ hmm ]]--)
+--end
+
+
+
+local function main()
+	print("Doodle3D release script")
+--	local opts = parseOptions(arg)
+--
+--	if opts['wrt-root'] then changedir(opts['wrt-root']) end
+--	if opts['cache-dir'] then paths.cache = opts['cache-dir'] end
+
+
+	io.stdout:write("Checking if working directory is the OpenWrt root... ")
+	local isOpenWrtRoot = detectOpenWrtRoot()
+	if isOpenWrtRoot then
+		print("ok")
+	else
+		print("unrecognized directory, try changing directories or using -wrt-root")
+		os.exit(1)
+	end
+
+	io.stdout:write("Looking for Doodle3D feed path... ")
+	local d3dFeed,msg = getWifiboxFeedRoot('feeds.conf')
+	if d3dFeed then
+		print("found " .. d3dFeed)
+	else
+		if msg then print("not found: " .. msg) else print("not found") end
+		os.exit(1)
+	end
+
+	paths.firmware = d3dFeed .. '/' .. D3D_REPO_FIRMWARE_NAME
+	paths.client = d3dFeed .. '/' .. D3D_REPO_CLIENT_NAME
+	paths.print3d = d3dFeed .. '/' .. D3D_REPO_PRINT3D_NAME
+
+	-- if empty, try to set something sensible
+	if not paths.cache or paths.cache == '' then
+		paths.cache = '/tmp/d3d-release-dir'
+	end
+
+	-- check if paths.cache is writable
+
+	os.exit(1)
+end
+
+
+--- Only execute the main function if an arg table is present, this enables usage both as module and as standalone script.
+if arg ~= nil then main() end
+
+return M