As there seems to have been a bunch of attempts to fix the T9 boxes, the two solutions I've seen in this thread have either targetted the linux mainline or just been hacked up decompiled dtbs. So what I've tried to do is create a patch against the rockchip-linux fork of the kernel, and modifies one of the existing dts files so it's not full of magic numbers that should be symbols. From the dtb this built, I've copied it onto one of these tvboxes, and the sdmmc port works. From there I've been able to install to emmc. As I just wanted this headless, none of the fancy hardware has been tested. So enough waffling, commit on github at https://github.com/DaveRichmond/rockchip-kernel/commit/974c59c7cdb765fe097737d1f0d57f0681b6be44 and available as a patch via https://github.com/DaveRichmond/rockchip-kernel/commit/974c59c7cdb765fe097737d1f0d57f0681b6be44.patch If that can be merged into the kernel fork that the images are built from (sorry, having trouble tracking that specific down), then it should build automatically along with the images and have some level of maintainability. Hope this helps someone!