Micronucleus - bootloader for Digispark (tiny85 with USB interface)
This sources is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
You should have received a copy of the GNU Lesser General Public License along with this script; if not, please visit http://www.gnu.org/copyleft/gpl.html for more information.
More info for use Micronucleus on OpenWRT routers you can see here (Russian)