Secondstage Bootloader para DM7020 HD
update dm500hdv2/dm800sev2/dm7020hd secondstage loader to support different flash types
http://happy-team.org/himagem/image.php?di=W3FJ
https://i62.servimg.com/u/f62/14/19/16/04/openup10.png
http://happy-team.org/himagem/image.php?di=3K6H