Recommended Emulators:

• Yuzu: get the official emulator at here (pre-nuke files). Or use forks:
  • Eden
  • Citron
• Ryujinx: get the official emulator at original emulator files (pre-nuke files). Or use forks:
  • Ryubing
  • Kenji-NX

You will need 'prod.keys' file and system firmware files, both from version 20.5.0. These files can be downloaded directly by clicking the respective links.
For Yuzu, place the "prod.keys" file in the "keys" folder inside the emulator's configuration directory.
For Ryujinx, place the "prod.keys" file in the "system" folder within the emulator's configuration directory.
If firmware installation is needed:

• For Yuzu: Copy the firmware files to "nand\system\Contents\registered" in the emulator's configuration directory.
• For Ryujinx: Use the menu option Tools > Install Firmware.