Help!! Elonex advertising display tablet custom rom help

Hi guys i have what i can only describe as a big tablet (i believe it to be some sort of adverting screen running android kitkat) i have been looking for days for info on the device but have come up blank. I would like to be able to install new firmware as the one on it is very limited. all info i have is listed any advice on Firmware and how to install TWRP as device has no buttons bar 2 Power Button and Reset Button. device has 3 usb ports and i have keyboard installed.

elonex

AD181-SDCT-BBW1-A-V1

RK3188
ROCKCHIP
RK30SDK
RK30BOARD
ARM CORTEX=A9@1.6GHZ
REVISION - R3PO
BUILD ID - CX-WF185IT-Z05-18.5-B1.02.20170412
BUILD/KOT49H
DALVIK 1.6.0
KERNEL VERSON 3.0.36+(ENG.ROOT.20151104.193426)
KERNEL ARCHITECTURE ARMV71
API LEVEL 19
OPEN GL ES 2.0

samsung 622
KLN8GIWEPD-B031
S4CRDMGXN

SKhynix
H5TQ2G83GFR
RDC 627V
DWMN0916LH1

Z05-V4.1 8G+1G
18.5/21.5-5V
04.600.ELC.0195
CXP02016376 KBL
ADW160851056

Im currently stuck on android screen lol any help would be greatly appreciated