ISOs in a "portable" or simplified way generally refers to using them with the on PC or via external storage on a jailbroken console. 1. Understanding the PS3 ISO Format
Once you find an index, you will encounter several types of files and folders. Here is a breakdown of the most common ones: index of ps3 iso portable
The Steam Deck uses the ext4 format for its internal storage and MicroSD cards. If you download PS3 ISOs on a Windows PC, use a network transfer tool (like WinPINATOR or Warpinator) or an exFAT-formatted flash drive to move the large ISOs to your handheld. Setting Up Your Portable PS3 Ecosystem ISOs in a "portable" or simplified way generally