The error "pkg2 read failed! Failed to launch HOS!" typically happens on a modded Nintendo Switch when your bootloader (Hekate) can't properly decrypt or read the Package2 (kernel) files for your Current Horizon OS (HOS). This usually follows a firmware update where your CFW files are now outdated. Here are the most effective ways to fix it: 1. Update Atmosphere and Hekate (Most Common Fix)
The error is often payload-specific. If you are using Hekate (commonly used for emuMMC), switch to Fusee (the official Atmosphere payload), or vice versa. pkg2 read failed failed to launch hos
When you update your Switch’s official system software (OFW), the "Package2" (pkg2) structure often changes. If your Atmosphere or Hekate files are outdated, they won't recognize the new format. Archive Bit Issues: The error "pkg2 read failed
The tool checks for: