@flaker38 Thank you. Everything worked out. Did according to your advice. Now I play like a real Nintendo 64!

Hello. The problem is that I can not assign buttons to the Nintendo 64 controller for this instruction (github.com/recalbox/recalbox-os/wiki/Configure-N64-controllers-(EN)).
I edited the file "InputAutoCfg.ini" and "mupen64plus.cfg". After starting the game Nintendo 64 - settings are reset again by default.
The instructions say that the "/mupen64plus" section is read-only. I use the "mount -o remount, rw /" command before editing the files, but they are all the same reset by default after starting the games or rebooting.

Tell me what I'm doing wrong?
I did not expect to encounter such a problematic setting.

I am using rasberi pi3 b + and RecalBox 6.0