Custom remote MXQ - LibreElec

Hello all,

I am using latest LibreElec NAND on my MXQ OTT box with S805 chipset inside.

I use another remote (from old kworld TVcard) and successfully modified - created my own remote.conf file.

I have problem, that I cannot change power button code for powering box ON. I am able to turn box off with my modified remote.conf and my own remote, but turning on is possible only with original remote from MXQ.

I understand, that this code for powering ON must be somewhere hardcoded, but where? In boot.img it is not stored at all (I checked it by download boot.img from device and extracted by Android extractor utility)

Please help, if this has some solution.

Thanks Jan