@Zing I mentioned version 6.0 but this "problem" also happens in the current version

I have tried to create a pack collection, for example, of Zelda from different platforms such as PSX, SNES, NES and GBA. However, it has only been possible to use one emulator at a time. Does anybody know how to solve this?

    <system>
        <fullname>The Legend of Zelda</fullname>
        <name>gba</name> <!-- the name has determined -->
        <path>/recalbox/share/roms/zelda</path>
        <extension>.z64 .Z64 .n64 .N64 .v64 .V64 .zip .ZIP .7z .7Z .chd .CHD .pbp .PBP .lst .LST .fba .FBA .bin .BIN .dat .DAT .cue .CUE .img .IMG .mdf .MDF .toc .TOC .cbn .CBN .m3u .M3U .ccd .CCD .chd .CHD .iso .ISO .gen .GEN .md .MD .sg .SG .smd .SMD .gba .GBA</extension>
        <command>python /usr/lib/python2.7/site-packages/configgen/emulatorlauncher.pyc %CONTROLLERSCONFIG% -system %SYSTEM% -rom %ROM% -emulator %EMULATOR% -core %CORE% -ratio %RATIO% %NETPLAY%</command>
        <platform>gba</platform>
        <theme>zelda</theme>
        <emulators>
            <emulator name="libretro">
                <cores>
                    <core>pcsx_rearmed</core>
                    <core>gw</core>
                    <core>mgba</core>
                    <core>gambatte</core>
                    <core>tgbdual</core>
                    <core>sameboy</core>
                    <core>gpsp</core>
                    <core>meteor</core>
                    [...]

@paradadf I understand, but even then I would like to know how to compile the changes made to a ".img" file image. Do you know how to do that?

Aprendi a alterar a intro, os temas dentre outros no recalbox através de rede local com cabo RJ45. Mas como eu salvo essas alterações para um arquivo .IMG? (para gravar em outros cartões SD)

I learned how to change the intro, the themes among others in the recalbox through LAN with RJ45 cable. But how do I save these changes to an .IMG file? (to record to others SD cards)