It automatically breaks down ISOs larger than 4GB into smaller segments that a FAT32-formatted drive can handle.
If you’re on a current Linux distribution (e.g., Ubuntu 22.04+, RHEL 9+), – use these instead: usbutil 2.1 download
It generates a ul.cfg configuration file that OPL reads to identify and launch your games. It automatically breaks down ISOs larger than 4GB