Can you access it by going to \\libreelec or the IP address? You can always roll back to the previous build if you believe the new samba version to be the problem.
no I can´t unfortunately. I haven´t tried a previous build, do you think that the samba version could be the problem ?
also noobs question: where are roms stored?
I have tried /roms for the roms and /roms/bios for the bios but I didn´t work, any advice?