goto openpli.org
click link for h9 se box go to bottom to android
download h9 se fw extract e2tv.ext4
go back to openpli download fw for your box h9 twin se or h9 combo se for example
open zip drag e2tv.ext4 ontop of e2tv.ext4 filename in zip and overwrite it
then put on sd card and flash from multiboot loader