All core defaults
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 Please, I have some mistakes on saving cores modifications and now I want to restore all of them to default. How can I do this? Thx. 
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 HELLO Go to emulationstation menu > game options. or edit recalbox.conf ## Default cores for RPi3 snes.core=snes9x_next gba.core=mgba mame.core=mame078 nes.core=fceunextdelete others lines. 
 https://github.com/recalbox/recalbox-os/wiki/recalbox.conf-(EN)
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 Thank you for your answer! But I'd prefer to make a backup of my roms and bios folder and make a clean reinstall of recalbox, by pressing "shift" at startup. 
 BTW, why the system goes back to 4.0.0 after reinstal? I still needs to upgrade to 4.1 now.
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 @wsp77 because you have an old noobs installation. 
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 @oyyodams said in All core defaults: @wsp77 because you have an old noobs installation. I'm so noob that I don't know what is noobs instalation... ^^ Can I upgrade to 4.1 without any problem? I've tried to force update after reinstall, but it does not work. I'll try again later. 
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 @wsp77 you've installed Recalbox via Noobs - https://www.raspberrypi.org/downloads/noobs/ Why not, but your Noobs version might be outdated. You can't upgrade from 4.0. My advice is to install directy from our website. Follow instructions from here: https://archive.recalbox.com/ 
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 @OyyoDams It works 100%, now I have a clean instalation of 4.1, even a problem with black borders on my tv is now solved. Many thanks! 
 
			
		