how to get to my android files (remote.conf) ?

I installed LE 8.0 by kszaq MXQ Pro 4k box, but remote is not working,

the faq says
Q: My remote control does not work, what can I do?
A: Grab remote.conf file from Android firmware (it's available in /system/etc)

I booted into original firmware, in Apps there is a file browser, I searched everywhere but I found no remote.conf file, I found a "system/" subdir under android tree, but there was no "etc" subdir nor remote.conf.

Where and how I get remote.conf f?

I did google for that for couple of hours, tried root-ing device to no avail, Ended up using adb over network

in settings/about media box click 5-7 on build number till we got message about "developer...", there should be "developer options" extra menu item in settings/, in there we turn on adb/usb debugging

from my computer
> adb connect mxq-ip-address
confirm adb auth popup on android box
> adb pull /system/etc/remote.conf remote.conf

I diffed Mario77 remote.conf to my MXQ Pro 4k ,
looks like different remote

factory_code = 0xfe010001 // my mxq pro 4k
factory_code = 0xfe010000

then there are dozen or different codes after that

Googling mxq s805 I see different remote than for mxq s905x.
I assume codes are hardwired into the remote keys.
If I had an arbitrary remote, how would I determine the code each key is sending ?