Dashboard does not matter for emulators, you should be fine on 15574, there is a bunch of emulators, here's some links from another website, keep in mind these are just the emulators, and not the roms, you still need rom files for every system. So example piratebay, xbxo360iso, google, etc... for roms

Here are downloads for ALL emulators for JTAG/RGH xbox 360.

FBANEXT 0.2.97.28 (NEWEST RELEASE)

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fbanext 0.2.97.27 fix by magicseb.

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FBANext 0.2.97.27 Taito Sys B Fix by MagicSeb

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virtua jaguarx 0.9 360 edition (atari jaguar emu)

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Retroarch v0.9.7

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FBANEXT 0.2.97.26 MagicSeb Custom (arcade emu,newest version)

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Update for fbanext 0.2.97.26 magicseb custom.

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update number 2 for fbanext 0.2.96.26 magicseb custom.

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RetroArch 360 v0.9.6

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dosbox 0.74 v0.1

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snes360 beta 0.32

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amiga 360 v1

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mame 072 release 2.

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Freepsx v0.1

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Mame 0.72 release 1

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New Updated emu pack release.
list of emus in pack
fceu next (nes emu)
gb next (gameboy emu)
snes9x next (snes emu)
vba next (gba emu)

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FBANext 0.2.97.25 (newest version of the arcade emu)

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CPX3 (arcade emu)

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PCE360 (pc engine emulator for xbox 360)

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DSON360 (Nintendo ds emu)

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MUPEN64 (nintendo 64 emu)

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PCSXR-XENON V6.2(new ps1 emu)

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ScummVM 1.4.1 - Double Pack (SCUMM emulator)

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SMS360 (sega master system emu)

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FCE360 (NES emu)

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Genesis360 (megadrive emu)

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sms plus (another sega master system emulator)

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VBA360 (Gameboy/gameboy colour/GBA emu)

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Hacked xbox1 emu files (to play xbox1 games and xbox1 homebrew on your jtag/rgh 360)

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Good luck