Priiloader can be used to autoboot into a homebrew app.
- Follow the autobooting steps listed here: https://wii.guide/priiloader#autobooting-with-priiloader
- USB Loader GX needs this .DOL for autobooting with Priiloader: https://sourceforge.net/projects/usbloadergx/files/Releases/Forwarders dols/UNEO Channel Booter for Priiloader.zip/download
- You also need this forwarder channel installed: https://sourceforge.net/projects/usbloadergx/files/Releases/Forwarders/USB Loader GX-UNEO_Forwarder_5_1_AHBPROT.wad