Beyond the removal of exploits, version 1.1.2/1.05 focused on stability and progression fixes: Audio Bug Resolution
Refined frame pacing in high-density areas to prevent stuttering.
Depending on your Switch model, you need a way to send a payload (like Hekate or Fusee) to the console via USB (using TegraRCM on PC), an RCM Loader dongle, or a modchip.
Fixes for crashes occurring in specific regions or after long play sessions.
