SamyGO

I just got a samsung signage display RM48D which seems to be an H series. Could we open a section for this device?
http://www.amazon.com/Samsung-RM48D-48- ... B00MTWTQL6

It has a port on the back labeled RS232c, which is a 3.5mm jack.
This cable let me connect to it successfully
http://www.amazon.com/gp/product/B00LAJ ... UTF8&psc=1

Connected to it at 115200 8,n,1 when set powers on, I get

0025 SLC
Ack
U
y
CHIP : NT72456 RevD

GPB_2 (High )DRAM:512x1ea

Any help on how to get a console shell would be appreciated.

Here is a photo of the internal motherboard. Note the clearly marked SPI points, and a DIP 14 header that looks like a JTAG connection.

http://i.imgur.com/eB0PgoV.jpg

hi. I think now the topic is quite enough.