The core stock operating system does not run directly from the MicroSD card. It is permanently baked onto an unmapped, internal chip hidden on the motherboard.
The is a budget-tier retro handheld often referred to as a "Nintendo Switch clone" or "generic budget console." Unlike premium handhelds like the Miyoo Mini or Powkiddy V90, the X20 Mini has extremely limited custom firmware (CFW) support . The Reality of X20 Mini CFW x20 mini custom firmware
Supports MiyooCFW for improved emulation and a cleaner UI. The core stock operating system does not run