A drive formatted to FAT32 is standard. For files larger than 4GB, you will need an NTFS or exFAT drive along with additional homebrew like Irisman or PrepISO .
If you're on CFW, ensure that you have a way to run homebrew applications. This often involves installing a tool like "Homebrew Store" or "Henkaku" for those on Vita and then transferring apps to your PS3. how to install pkg games on ps3
Community forums are your best friend: