I bought a raspberry PI3 b+ and started dancing with a tambourine. That F1 does not work on raspberries, I did not know. And that was the first problem. I had to use the WinSCP program. I was unable to install themes for batocera, after adding themes to theme folder and using mount-o remount, rw / and /recalbox/scripts/recalbox-save-overlay.sh there is not enough space for the terminal written in the folder. Even after the removal of old themes remains the same. And themes running on batosera x64, almost all do not work on batosera PI3. Does the themes folder have limitations? Sorry for my English, I write through online translator.