Theere is an script/tool to resize the apks internal storage for all Rokchip based products.
In Windows PC: http://forum.geekbox.tv/viewtopic.php?f=2&t=172
In Linux PC: http://forum.geekbox.tv/viewtopic.php?f=2&t=170
In Windows PC: http://forum.geekbox.tv/viewtopic.php?f=2&t=172
In Linux PC: http://forum.geekbox.tv/viewtopic.php?f=2&t=170