SamyGO

Hello. I got recently BD-H8509s. Its on firmware version 1013.
Is is possible to install SamyGO or root this device?
When i used DNS 46.101.161.175 it shows me that im offline (cannot connect to network). And when i try firmware update (downgrade), im getting error 800.

Thank you.

Did anyone already found rx and tx uart pins on that board? That would be good start. I didnt suceesed finding them.

So, i found service guide, and conncted uart (green dots on diagram).
It seems to be working.
I also pulled up instead of pulldown some secure pin. Idk what does it do, but device did boot in non-secure mode so i left it pulled up.

I found CFG (BOOTCFG) pin which is pulled up by default. When i connect it to gnd, device doesnt boot. When i connect it to gnd after boot process starts, i got into shell, but i wasnt able to send any commands. Idk if i dont have priperly connected TX(pc) to RX (samsung), or its expected behavior.
For uart there is missing ic on bottom side of pcb, which seems to be ttl<->rs232 adapter. But soldering on mcu side of those resistors seems to do the trick.

That side of resistors from capacitor side is from left: 3.3v, RX, TX. And i scaped solder mask left from 3.3v resistor for GND, so i can connect max3232 (uart to rs232) from that one spot on PCB.
From log it seems like i have firmware from year 2017, and root is working up to 2015? So i would need to downgrade first.
This is 1007.1 (from 2015) firmware:
http://org.downloadcenter.samsung.com/d ... HRDEUC.zip

Is there any downgrade package for this BD player? Is it even supported by SamyGO?

Is firmware downgrade, ans patched firmware with samygo available for this bd player? If so, i guess its behind paywall.
Ik ok to donate, but im not sure if its even supported.