Ayuda con direct emmc. Que es? Que necesito?

[Myrwok]

boxes jtag o emmc
adaptadores emmc o jtag
cables jtag

https://www.youtube.com/watch?v=Co0eM0LW00I

https://www.youtube.com/watch?v=Mkn6f9oAGNM

https://www.youtube.com/watch?v=tG1FWkZ_...qyd6l3OTX0

https://www.youtube.com/watch?v=ZFSO8VYmN9s

https://gsmserver.es/search/?f=all&que=jtag

https://gsmserver.es/search/?f=all&que=emmc